Decision Making Single Pilot
A safe flight relies on making the right choices. Decision Making is a major factor in aircraft accidents and incidents. Accident data show that the majority of fatal accidents are attributable to decision errors rather than to errors of perception and action. It is therefore essential to make good decisions before and during the flight.
Prepare your flight thoroughly considering for instance weather, airspace, airports, aircraft state, fuel endurance and physical and mental fitness, and plan for contingencies. Once airborne, continually monitor what’s going on to maintain situational awareness and act accordingly. Be ready to adapt or deviate from the plan as the situation evolves.
https://www.easa.europa.eu/community/topics/decision-making-single-pilot