@Jiu-Chessu:
Don't worry, I've got that covered. I've been in therapy for almost three years now, and I've dealt with some of my emotional chess issues there, so no such recommendation took place. Also, pardon me for not expressing myself accurately: hadn't I somehow been dealing with my emotions even before therapy, I wouldn't've been able to progress at all. I've become somewhat tougher in that regard, and I'm certainly not more emotional than what Ivanchuk has displayed over the years, anyway.
Having said that, wanna recommend me a chess book, as I had previously suggested? 
Happy reading!!"
I'm looking to improve my chess play. The premise really is simple as that.
However, in the past two years, my learning materials have become... scarce. First I lost gigabytes upon gigabytes of free instructional material in a freak hard disk accident, then I couldn't find it online again, and... that's about it.
Because of that, I'd like to find a single chess book and focus on it until I know and understand it inside out. Truth be told, most of what I had collected and then lost - wasn't even put to use; instead, many of those I found and kept out of sheer curiousity, as well as the obsessive thoughts along the familiar lines of "I'm gonna need it at the exact moment at which I throw it away".
Here are some helpful facts about my chess play:
- I mostly play live online games that last about 15-30 minutes on average; this means that I prefer time controls like 20 0, 15 0, 5 8 etc. Anything shorter doesn't let me think quickly enough, especially after a pause from chess, though the problem lessens a bit with enough games per day; anyhow, I don't intend to change this, because I don't really have time to invest in games that are longer than that;
- I've got problems in all phases of the game: I botch practical endgames (contributed to by being in time trouble at that point, perhaps?), I'm afraid of the main lines because of memorisation and lack of literature (so I play 1. e4 sidelines as White and the Scandinavian with 2... Nf6 as Black, and I only truly understand three types of positions: KID, Dragon, and Lion), and I'm not good at "indirect" middlegames (a. k. a. the ones where my immediate strategy needs to be too far off from attacking my opponent's King);
- I make use of various online tactics trainers, but they punish me too much for making suboptimal moves, so I get discouraged by them very often; other than that, I seem to be good at spotting forced mating patterns;
- for what it's worth, my style is one of a positional attacker, and I always prefer a good position over material, because I suck at the technical aspect of the game to the point of not even noticing simple pawn loss tactics and such, because while they'd be a big deal at a really high level of play, I usually win because of how focused I am on attacking while my opponents loaf around snatching pawnsies;
- I hate being under attack, so I make sure I lose the game due to other factors xD;
- I am VERY emotional, so losses can be exhausting, especially those which are due to blunders or getting completely outplayed from the opening;
- I have a rating elsewhere of about 1900 points, though it can get as low as 1700 every other year or so.
With that in mind, any recommendations for a hot single book in my area, and by that I mean something that I can find online and have be relevant and useful for my intermediate-level rapid chess?