You deserve to be successful?!
Many people give up because they do not trust themselves enough and do not treat themselves to success. A healthy dose of modesty I find it very sympathetic, but that's not the point here.
This is about you - about you and your future and that should be as good as it is possible. You can be successful and if you do not give up now and continue, you will be successful too!
Conclusion
We have all been in situations where we wanted nothing more than giving up; just let it go and make it valuable experience.
But if you remember and are honest with yourself, it's always those uncomfortable, difficult situations where you've outgrown yourself. You've clenched your teeth and kept going.
Giving up would have been easier but you fought and became stronger.