Eat more coconuts
How to get from 1400 rating to 1600?

just figured out the magical way to go from 1400 up....let your opponent make the mistakes. Just dont make mistakes! No brilliant strategies, no radical combinations..just dont do anything wrong! 1600 here I come!

The way I got from 1490 to 1690 a while back, was reading Silman's HTRYC 4th ed. with a tournament sized board and pieces, moving by hand and taking time to understand the material on every page before I turned to the next one. That was the biggest factor. Second thing I did was getting a Chess King App for Android called "Chess tactics for beginners", where I focused 80% of that practice time on the "Winning Material"-part. I read the book for 2hrs/day religiously, and practiced tactics on the app for 30mins/day. Did this for 3 months(I actually only got through 3/5 of the book), almost every single day. Played games very seldomly during this study time. When I started playing more again, my rating first dropped very low and I got depressed over it. But I stuck it out for a week or two, and brushed up on my opening knowledge during that time aswell, and all of a sudden my rating rocketed up by 200 points during a couple of days. So it bugs me I didn't even finish the book, might have been 1800+ by now if I had done that Give it a try!

Oh and whenever you play skip bullet and blitz, you only repeat mistakes and misconceptions at that rate of play. Stick to 15/10 or G30 , in order to find stronger ideas you have to take more time. Good clock management means pacing yourself so that you are using up almost all of your clock time during a chess game.

Seeing you've done very few tactics problems here, you have a low tactics rating yet you only solved 22 of 39, perhaps that is your weak spot. Note that you can solve an unlimited number at chesstempo.com.
You should also be able to name and demonstrate the main tactical motifs, which are interactively-listed here:
https://www.chess.com/article/view/chess-tactics--definitions-and-examples
https://chesstempo.com/tactical-motifs.html
The positions here are also worth knowing
https://chesstempo.com/positional-motifs.html
Additionally, you may get a better idea of how to put together attacking plans with:
Fred Wilson, Simple Attacking Plans – four straightforward principles demonstrated with 36 annotated games.
Michael Song and Razvan Preotu, The Chess Attacker’s Handbook, fourteen principles demonstrated by games and with example problems.
At your level, know endgame techniques. Two books I like are:
Jesus de la Villa, 100 Endgames You Must Know – stresses patterns rather than simple lists of moves.
Jeremy Silman, Silman’s Complete Endgame Course from Beginnner to Master – tells you what you need to know based on your rating.
Possibly of interest:
Simple Attacking Plans by Fred Wilson (2012)
https://web.archive.org/web/20140708090402/http://www.chesscafe.com/text/review874.pdf
http://dev.jeremysilman.com/shop/pc/Simple-Attacking-Plans-77p3731.htm
Logical Chess: Move by Move by Irving Chernev (1957)
https://web.archive.org/web/20140708104437/http://www.chesscafe.com/text/logichess.pdf
The Most Instructive Games of Chess Ever Played by Irving Chernev (1965)
https://chessbookreviews.wordpress.com/tag/most-instructive-games-of-chess-ever-played/
Winning Chess by Irving Chernev and Fred Reinfeld (1949)
https://web.archive.org/web/20140708093415/http://www.chesscafe.com/text/review919.pdf
Back to Basics: Tactics by Dan Heisman (2007)
https://web.archive.org/web/20140708233537/http://www.chesscafe.com/text/review585.pdf
https://www.chess.com/article/view/book-review-back-to-basics-tactics
Discovering Chess Openings by GM John Emms (2006)
https://web.archive.org/web/20140627114655/http://www.chesscafe.com/text/hansen91.pdf
Openings for Amateurs by Pete Tamburro (2014)
http://kenilworthian.blogspot.com/2014/05/review-of-pete-tamburros-openings-for.html
https://chessbookreviews.wordpress.com/tag/openings-for-amateurs/
https://www.mongoosepress.com/catalog/excerpts/openings_amateurs.pdf
Chess Endgames for Kids by Karsten Müller (2015)
https://chessbookreviews.wordpress.com/tag/chess-endgames-for-kids/
http://www.gambitbooks.com/pdfs/Chess_Endgames_for_Kids.pdf
A Guide to Chess Improvement by Dan Heisman (2010)
https://web.archive.org/web/20140708105628/http://www.chesscafe.com/text/review781.pdf
Studying Chess Made Easy by Andrew Soltis
https://web.archive.org/web/20140708090448/http://www.chesscafe.com/text/review750.pdf
Seirawan stuff:
http://seagaard.dk/review/eng/bo_beginner/ev_winning_chess.asp?KATID=BO&ID=BO-Beginner
https://web.archive.org/web/20140708092617/http://www.chesscafe.com/text/review560.pdf
https://www.chess.com/article/view/book-review-winning-chess-endings
https://web.archive.org/web/20140627132508/http://www.chesscafe.com/text/hansen173.pdf
http://www.nystar.com/tamarkin/review1.htm
Silman's Complete Endgame Course
https://web.archive.org/web/20140708103149/http://www.chesscafe.com/text/review594.pdf
http://theweekinchess.com/john-watson-reviews/theres-an-end-to-it-all
100 Endgames You Must Know
https://web.archive.org/web/20140708105702/http://www.chesscafe.com/text/review645.pdf
https://www.newinchess.com/media/wysiwyg/product_pdf/9026.pdf
The Chess Attacker's Handbook
http://www.gambitbooks.com/pdfs/The_Chess_Attacker's_Handbook.pdf
How to Reassess Your Chess, 4th Edition
https://web.archive.org/web/20140708095832/http://www.chesscafe.com/text/review769.pdf
If you play 5-10 games a day against sub 1000 players only, you will achieve your goal faster. Just don't lose any against them. Lol. Seriously, taking lessons is still the best way to elevate ones' game. Good luck.