You best listen to your heart, your feelings and your conscience.
I think that a prayer can take many forms; it may be a song, a poem, a dance, a task, a piece of art, a helping hand, tears and smiles, a dialogue, meditating, etc. - as soon as it comes out from your heart.
Convictions come from education, learning and reading, the people surrounding and motivating or demotivating you, your own experiences, quests, errors or performances, pains and struggles, positive and less positive events, etc.
The faith comes also from the faith in yourself and in your beloved ones.