I moved cities for an awesome job and moved in with my best friend from high school. He was on his second year in an engineering program at a major university. I was working full time and going to community college classes at night, while he worked part time and was living on financial aid and loans. I was incredibly jealous. He would go out drinking every night, always had cash to do whatever he wanted, had a nice car, took amazing vacations and I can't tell you how many times I would wake up and see a different girl who spent the night.
Later on, when I looked at my peers who were buying houses and nice cars, I had assumed they were doing better than me, had better jobs, or had help. Nope. They were up to their eyeballs in debt. Some lost jobs and lost everything. My best friend ended up moving away after a suicide attempt and never heard what happened to him.
Lastly, I decided to go back to school for a second degree in electrical engineering. Not because I needed, but because I wanted the challenge. I had to retake some lower level courses that didn't transfer. Overhearing young adults complain about not having time to do anything, school is so hard, and then talking about the party where they smoked pot all night is just cringe-worthy.
You shouldn't feel inadequate at all. I certainly don't.