Yeah hell no too long

play openings that suits your play style, If the ruy is to complex then play italian. You don't need to learn everything. Play in your style and don't do an radical changes that doesn't suit you.

Training on my weaknesses

I too have been pefecting my weaknesses.I can't beat anyone now.

Possibly helpful:

Simple Attacking Plans by Fred Wilson (2012)

https://web.archive.org/web/20140708090402/http://www.chesscafe.com/text/review874.pdf

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

Discovering Chess Openings by GM Johm 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

Chess Endgames for Kids by Karsten Müller (2015)

https://chessbookreviews.wordpress.com/tag/chess-endgames-for-kids/

A Guide to Chess Improvement by Dan Heisman (2010)

https://web.archive.org/web/20140708105628/http://www.chesscafe.com/text/review781.pdf