Force yourself to pick one. It won't be the perfect course, but that's fine. As long as it is decent, it will be time well spent. Especially since doing so will help you overcome analysis paralysis for future situations.

You could even try putting your top few choices in a hat, and letting chance decide. Perhaps your visceral reaction after randomly picking one will help reveal what you actually want.

Also, this may be completely off base, if so disregard this paragraph, but have you considered looking into mindfulness? Over time, it can help with getting past these brain blocks. It's personally been very helpful for me.