A practical advice would be Napoleon Hill’s Goal Setting Steps

1. Get clear on what it is that you want.
2. Determine what you will do to achieve it.
3. Set a deadline when you expect to accomplish this.
4. Create a definite plan, and start it immediately.
5. Write out a clear concise statement of the above 4 steps.
6. Read your statement aloud at least twice daily, more when possible, seeing, feeling, and believing that you already possess it.