I think I found it, the one ability you need in order to be successful at animating (or making games for that matter): Being able to look past the piece of crap that's on your stage at the moment and see what it can be become. Nothing is more destructive than looking at what you've worked so hard on the last few hours and realizing it looks like shit. Now, being able to see the possibilities in that piece of shit isn't that easy, it requires a somewhat creative imagination. But once you've put yourself past that 'This looks like vomit, I'm gonna play some videogames' mentality and pushed through with that piece of shit and actually managed to turn it into something beautiful a couple of times, you start to realize it is true.
So yeah, felt like sharing that bit. Don't hesitate to leave some tips in the comments section.
Also a few screens from my new game: