Is not making massive mistakes or going off track or living in a low zone for months or years.
The greatest sin in anyone’s life is choosing not to make themselves better.
Could be for any reason: over confidence, ego or either of their cousins.
However, look at any internally happy person (not just fake happy) and there is always a common thread amongst all of them: They made the effort to change themselves for the better, over and over and over again.
That’s the secret formula. That’s it.