You do not have to force certainty overnight. Bring your honest questions to God, and let Him meet you there. He is not threatened by your search, and He is faithful to guide you, steady your heart, and rebuild confidence one step at a time.
For the next week imagine God standing behind your back as the resurrection pictures state or as he appeared to Mary Magdalena, what would you do during your day.. and then take this for your whole life time.. ๐ค