You are always choosing.
And that also means, if something seems to 'happen' that seems to 'cause' something such as a sickness or bodily issue etc, that's a decision too... and if that sickness STAYS, or if that condition CONTINUES, it is because there is still an ongoing decision being made.
In other words, decisions are based on whether or not you CHANGE YOUR MIND. If you 'set' your mind (choose), and then you leave it set that way, it will constantly remain in that 'mode' until you change it to something else. That is constant decision. You are constantly sided with or in favor of something, until you change your belief.
Therefore your belief is what your decisions are made of. You set a belief and forget it, but it keeps on running your life. You can set these decisions in early childhood - "I'm not worthy" or whatever... and then you keep it, and it keeps on producing results, over and over and over and over again, until you change your mind. Because it's a constant decision.