When we struggle with a sin and find it hard to get the victory over it, it's like a chick hatching. He has to work at it to gain strength for his new life outside the shell. It's the same way with us.
We cry out to God for help and sometimes He simply waits, allowing us to chip our way through the problem.
Not that we can overcome it on our own; it's all under His watchful eye. He knows when to help and when to wait it out so we can learn or see or gain strength - whatever it is we need.