In these world lot of people are not improving themselves because they simply focus on others , in such a way that you have to do what others are not doing.
To be a better version of yourself you need to do lot of hard work and improve yourself daily on those weak area were you have to focus on. Strive hard as you can don't back down face the fear and overcome obstacles
You must do thing which you like the most:
Running
Workout
Read books
Set realistic goal
Be loyal
Know yourself completely
Be patient
Believe in yourself