Starting, finishing and maintaining are different skills… but all necessary to achieve a goal.
Sparking change is one thing.
Reaching the finish line is quite a different one.
Towing the line in between is all together different again.
Each have different skills, points of view and challenges.
I bet you’re better at one, or maybe two, of them, but not so skilled (yet) at one or two of the other.
Recognize which is your forte. Which is your weakness.
Recruit help and training and resources to round out your profile while you follow your path.