Howlite

Strengthens our memory / Motivates us to want to acquire new knowledge and to master what we already know / Patience / Helps us get rid of fears, anxiety and emotional trauma / Serenity and calm communication / Helps in self-awareness and encourages the expression of our feelings / Absorbs negative energy and fills the void with calmness / Helps us get a little closer to our higher self.

You can program a crystal, which means asking its help with something specific of all that it can offer you. However, this is not mandatory. The crystal will help you anyway where the universe deems you need reinforcement or assistance. Basic condition of course is that you value it and believe in its power.