Stop comparing yourself with others
Focus on what you want, and don't be threatened by the outside world. The grass is not always greener on the other side, but our mind often makes it seem that way. Stop comparing yourself with others and enjoy the journey instead of focusing on the finish line.
The world is a prominent place—with lots of chances to succeed. How to stay wildly ambitious and achieve your goals? It would be best if you started somewhere: to do anything well, you first have to learn how to do it badly. Remember to be okay with your initial results, and don't give yourself a hard time for initial failures.
The world is bubbling with opportunities for an ambitious person to find flowery, fulfilling success. The specific direction may be unclear, but it'll work itself out—dive in somewhere.