Do what you have to do, to do what you want to do.

Do what you have to do, to do what you want to do!

Do what you gotta do so you can do what you wanna do.

If you can't do what you want, do what you can.

We do what we have to so we can do what we want to.

You have to do what you gotta do in this life in order to do what you wanna do...

Do the best you can until you know better. Then when you know better, do better.

do what you got to do now, so you can do what you want to do later

You do your best until you know better, then you do better.

If you do the things you need to do when you need to do them, then someday you can do the things you want do when you want to do them.

If you have to do it, you can do it.

Translation: If I can't do it, I will work on it until I can. If I become able to do it, I will work on it until I can do it perfectly. If I become able to do it perfectly, I will work on it until I can do it perfectly any number of times.

When you do the things you need to do when you need to do them, the day will come when you can do the things you want to do when you want to do them.

working at something until it regularly works for you.