affirmation

noun3

1. •
   That which is affirmed; a declaration that something is true.

   • Her success was an affirmation of all her hard work.
   • The ceremony included an affirmation of loyalty.
2. •
   A form of self-forced meditation or repetition; autosuggestion.

   • Daily positive affirmations can improve self-confidence.
3. •
   A solemn pledge (to tell the truth, to bear allegiance, etc.), legally equivalent to an oath, taken by people who are forbidden to take a religious oath (such as Quakers) or otherwise prefer not to do so.