So talking with my girlfriend, I've realized that I let

>>18470183

I think that you need to use the fact that she was cool with them and you as fuel for managing your insecurities. You are seriously worrying too much.

Your chick is cool and she chose you. Keep being you and keep trying to improve yourself. When you fail and make a mistake or show those insecurities again remember not to lose your spaghetti like you are now. Strong men are forged not born, OP.

>>18470224
Pretty much this anon.

What insecurities do you have? If it's something about yourself you can change, decide whether it's really worth making a serious commitment to changing. If you make that commitment, keep it realistic and take small, concrete, quantifiable steps towards changing it.
The classic example is body image but this is a good mindset for anything you can meaningfully affect.

Also? Random acts of kindness. One of the best methods I find for feeling like less of a worthless, selfish failure is being nice to people - if I randomly bring my gf a care package when she's studying or write her a nice note before work, I've not only made her feel nice, but I've spontaneously generated evidence that I am in fact a good person.