ANYBODY BEEN IN RELATIONSHIP 7 YEARS PLUS ⁉️⁉️❓

I’m 25 and I’ve been in a relationship with my boyfriend for a year.. I have had a 4 year relationship in the past my question is do you have moments were you feel like you should break up with your S/O throughout the course of a long term relationship possibly the one you wanna marry...is that normal to go through a rough patch? If so how long does a rough patch normally last ? How to fix it ?