Decide with care, then spend energy on execution instead of imaginary alternatives.

After a careful decision, continuing to run the alternatives is not diligence. Those imagined versions cost real attention and always compare favourably, since they have no problems yet. Meanwhile the actual path is under-resourced because part of you is still living somewhere else.

When an alternative starts playing in your head, notice it and return to the concrete next step in front of you. Give the chosen path your full effort for a set period before evaluating. Its results will be a fair test only if you actually showed up for it.