Sure, you could do that. The key is to choose your meditation and then do it every day. Even the most basic meditation can get you in a very deep state of relaxation and/or bliss. So, pick an easy routine (which can be a different meditation in the morning and the evening) and stick with it.

You could focus on the back of your head or any other body part for that matter. The key is to keep your focus at one spot and to let your thoughts distract you less and less. If you can stop thinking (or at least calm your thoughts) by focusing on the back of your head, then go ahead 🙂

May I ask why you choose the back of the head? Is there a specific reason for this?