Keep a quiet count of the times you did what you said. That number is your real reputation.

Reputation sounds like something other people hand you, but underneath it is a tally of kept and broken promises. You are the only one who sees the whole list, including the small ones nobody noticed you dropped. Keeping a private count pulls the question out of the realm of feelings, where you can always argue yourself into being reliable.

For the next two weeks, write down what you commit to and tick it when it is done. Keep the promises small enough that ticking is possible. If the list shows a pattern, let that shape what you agree to next, not how harshly you talk to yourself.