As someone who was in your shoes, lemme suggest the following - the enemy is not your coworkers with big egos, or the work days, or meetings or whatever.

The enemy is your own ignorance.

You are bothered because they know stuff and you don't. There is literally nothing they can do about this. You are not in a school where people will take the time to teach you how to do your stuff. This is work. Say you hire a carpenter and a painter to build some furniture & paint your roof. The carpenter feels very insecure that the painter is so good at painting. How exactly does this help the carpenter improve his skills ? So work on your studies. You say you are "very willing to work hard". So just do that. Ignore all this interpersonal he-sucks-self-esteem-rockstar-dignity etc. This is not some Lifetime drama. Ramp up fast. Focus on your skills & the rest of the issues will fade away in the background. Atleast, that's how I solved it when it happened to me.