Being jealous doesn't make you a bad person as such, but its not good to feel jealous of other people because it can turn into envy and might also result in bad feeling/tension between you and the person you are jealous of. Also, some people get so jealous that they end up hurting the other person (not necessarilt physiclly). But just as importantly, its bad for ur own mental health and self-esteem.
Believe in yourself.
If I were you I'd go for it.
You should apply for it.
Why not?
The sky's the limit.
Good luck!
xxx