I can't do this anymore.

Idk how to keep going. Bro everyday I start my day so long coz after i shower I pray. And once I start praying i can't stop. I can't stop till ii reach the perfect thought and everything. I keep doing it again and again and again. All the time. Everyday. I want to stop. But then I start fearing what if the thought comes true. Please how do you guys cope with this stuff.