Sometimes the best option is to consciously decide to stop thinking and just do it.
I often find myself mentally hyping myself up to do something. What’s actually going on is I don’t really want to do it so I have to convince myself that I do. For me this usually happens with things that I need to do, not just want to do, and have already made a commitment to.
Case in point: working out. I’ve set goals, schedules, and commitments around working out. I’ve already put a lot of mental and physical energy into deciding to workout and I know that I really do want to. So why do I often try to convince myself to go work out? I have no clue, not the damndest! But I do know how to stop this mental argument that may lead to me not working out. I simply tell myself that it doesn’t matter if I want to or not I’m going to anyways. My brain almost always instantly switches, the decision has been made, it’s on to something else mentally.
Mental arguments about things you’re going to do anyways are pointless and actually drain energy, needlessly burning calories. Consciously decide that it doesn’t matter if you want to or not, that you’re going to do it anyways. It works for me, I bet it will work for you too.