Adopt the "five more minutes" principle - when the feeling of fatigue or the desire to give up arises, make a simple commitment to continue for just five more minutes, and reassess if it's truly time to stop.

Adopt the "step technique" - break down large goals into small milestones, and celebrate each milestone as an interim victory before continuing on your path.

Practice the "goal test" - every time you feel like stopping, ask yourself a simple question: "Am I stopping because I have achieved my goal or because I am struggling right now?" and act according to your answer.