What should i do about this situation?

TL;DR what should i do

Me 21M dating 22F Ive been in a relationship for 3 years and i haven’t got any idea for my career and i have so many goals and aspirations but i dont know how to get there meanwhile i get jealous of my girlfriend like I’m a very jealous person, if she interacts with other guys and laughs at there jokes really hard or just little things that make me trip! ive just began to hate myself because i feel like im a pos and she wants to be with other guys because they have there life’s figured out and i don’t at the end of the day i always feel like a Fool! I dont want to lose her but sometimes i feel like thats the best decision for my health and hers so i can get my career figured out. i really want things to work out tho i love her and shes so beautiful i think once i figure out my career and make more money i can finally be happy with myself and hopefully things will turn around and we can have a healthy relationship and a prosperous future but sometimes thing just begin to feel like to much on me and i get overwhelmed. I do take things out on her not like physically just i just got upset and get mad at myself and want to run away and she chases me. i know im the problem and its not good im just very lost i don’t know what to do and i wrote this to express the way i feel and as i write this as we got done arguing because we had a friend get together and i feel like she just laughs and interacted with her friends bf more than me and laughs at his joke a-lot. I know to some this might sound crazy but its the way i feel and i don’t know what to do there might be more to this i could’ve wrote but thanks for listening i have no one to talk to about this because i feel like a b but im lost and i just wish I had everything figured out so i can treat her love her the way she deserves

What do y’all think about all of this?