We are constantly updating the apps or operating systems.For what?? Because we want the best version of that app or operating system which includes higher performance than previous and newly added features.
In same manner,we should compete with ourselves to become the best version of ourselves. Try to improve yourself to become better than you were yesterday.
I remembered one famous dialogue from Sultan which is _'Sultan ko koi hara sakta hai to sirf ek insaan jo hai khud Sultan'_. And this is right,we can fight or compete with ourselves and win over ourselves.
So,nobody is your competition,you are your own competition and If you continuously compete with yourself then you become better not bitter.