Microevolutions..........................

We do not change by snapping our fingers and deciding to be someone entirely new.  We change bit by bit, day by day, habit by habit.  We are continually undergoing microevolutions of the self.
     Each habit is like a suggestion:  "Hey, maybe this is who I am."  If your finish a book, maybe you are the type of person who likes to read.  If you go to the gym, then perhaps you are the type of person who likes to exercise.  If you practice playing the guitar, perhaps you are the type of person who likes music.
     Each action you take is a vote for the type of person you wish to become.  No single instance will transform you beliefs, but as the votes build up, so does the evidence of your new identity.  This is why meaningful change does not require radical change.  Small habits can make a meaningful difference by providing evidence of a new identity.  And if a change is meaningful, it actually is big.  That's the paradox of making small improvements.

-James Clear,  Atomic Habits