Faith is like a mountain and doubts are like clouds.
Can any cloud anytime shake a mountain? It is impossible.
Faith is to love something you have no idea about ...
Being in love is the job of the heart and being in doubt is the job of the head.
Both have got their places. You need to have both. How much doubt can you have? Just keep having and when all the doubts are over and no more doubts come up, from there, faith begins.
Faith makes you stable & steady. It brings out the totality in you. Consolidation of your energy is faith.
Dissemination of energy is doubt.
If your faith remains unshaken despite a hundred events that nature brings to you,
then you are a perfect person and life becomes smooth.