5. Be productive
The more productive you are, the more you'll get done. If you can get your other tasks done in a reasonable amount of time, you should be able to find plenty of time to dedicate to your hobby. If you're not that productive, aim to get more done and waste less time. The less time you waste, the more you'll have for your hobby. When the time that you've dedicated to your hobby comes round, it's important to make the most of it. Switch off from everything else and aim to have a really productive session. No matter what your hobby is, you should aim to spend your block of time entirely on your hobby.