How have you found success with them? When is the best time to do them?
Could you elaborate on “non-ritualistic”?
As basic verbal invocations you do outside of a formal ritual. No circle casting, no altar, no candles, no incense, no robes.
Oh! Yes, I’ve had success with them.
When to do them though really depends on your situation.
I think you could call them prayers, but I’d rather not due to the Christian context.