I concur with you @anacristinasilva
When we praise and believe in ourselves it can go a long way to helping us achieve our dreams.
Whenever I want to do something important and I start filling anxious or afraid the only thing that helps me is when I speak positively to myself; I'm good at what I do therefore I can do this and you will see me with a bright and confident look.
I'd encourage us to always believe in ourselves and be confident at all times.