I can, therefore I am.

If you think you can do it, you can.

Be thine own palace, or the world's thy jail.

After a storm comes a calm.

If you're going through hell, keep going.

Begin to be now what you will be hereafter.

Go for it now. The future is promised to no one.

If you can dream it, you can do it.

Well done is better than well said.