Noah didn't build a boat over night. Ruth didn't learn the ways of Naomi's people over night. Moses didn't deliver the people in a few months or even a few years. It took time. There was a learning curve but each of them finished strong.
It doesn't matter how you start it matters how you finish. Begin where you are and then refuse to quit. Persevere and God will meet you in your weakness and give you strength. He is faithful. He is called Alpha and Omega, the beginning and the end.