It's so easy to be all talk and no work. No one will make your dreams come true for you. If you let yourself be held back, at least be honest with yourself and admit you're doing it to yourself.
No one but you will make you succeed in achieving your dreams. Trust me. I'm wondering where the years went, and all my cool domains names lay there, half completed.
As for practical advice, if you feel the need to relax, try watching movies you've already seen, and working while they are on in the background. For me, it's The Goonies and CB4. Anything you know like the back of your hand, so you're entertained, but can fade in and out of paying attention and keep on cracking on the work. It doesn't have to be all or nothing. This works especially well with "gruntwork" but it's probably not going to be something you want to do when really working on new, core aspects. There you just need to buckle down and do it. And if you don't... well, then you want to eat cheesy poofs and lay around more than you want this other dream.
How you spend your time _is_ your dream. You might not like your dream, but there it is. In the long run, we all end up with the level of productivity we want, and that we deserve.
I don't mean to be negative, but having your hand held and being told it's OK isn't what you need. You need to get your ass in gear. So do it.
Take a sick day to get started if you feel like you can't get started on the weekend. Get the ball rolling. Do whatever you have to do to get started, or you'll end up where you deserve - nowhere near your goal.