HI there...
I have a few things i try repeatedly telling myself when i feel like a total loser... and i do quite often...

we always do the best we can... if we could do better, then we would've... our best efforts may not always bring the best results immediately, but with time always you see your efforts paying off...

i too am unemployed, sitting at home, studying off of my parents... i can choose to spend my time making myself feel like a total loser, comparing myself with my peers, crying myself to bed every day... or i can accept it, be happy with myself, that this is where i am in my life, use my time wisely to make it all work, study well now, and probably get a great job when i'm finished...

the problems, emotional environmental physical etc all are very different for even people raised in the same household...
so their eventual excellence in various fields are at varied times of life...
if you're more practical and try to be more logical in your approach toward life, you learn that logic doesn't always help relationships, and you need compromise etc at some point later in life...
whereas if your more sensitive and emotional, you learn that certain areas of life require you to put those issues aside and deal with them with a more logical approach etc...

so, there's no point beating yourself up over what is missing...
no good ever comes out of it...
what is, is...

Forgive yourself... say "it's okay" to yourself every once in a while... pat yourself when you make someone smile ...

everyone can do what everyone can... it's all about your confidence in yourself...

if you are worried about these things, work on them... for example challenge yourself to go out there behind the wheel instead of accepting your fear and feeling bad about it...

once you work hard on it, you will definitely find your self-esteem, confidence rising...
you will accept yourself better...
and that will help you overcome all these issues quicker and better...

you have a whole life ahead of you...
all the best!