However, it's not usually enough to just have those goals in your head. You need your goals somewhere where you'll be reminded of them regularly.
The first step is to write your goals down.
Then review them regularly, update them if you want to. The more specific your goals, the more effective they'll be.
Make them SMART goals:
- Specific
- Measurable
- Achievable
- Relevant
- Timed
You can believe it or ignore it - setting goals will play a big part in your motivation and hence success.