There is a canyon of difference between doing your best to glorify God and doing whatever it takes to glorify yourself. The quest for excellence is a mark of maturity. The quest for power is childish.
At the beginning of every act of faith, there is often a seed of fear. For great acts of faith are seldom born out of calm calculation.
Go to the effort. Invest the time. Write the letter. Make the apology. Take the trip. Purchase the gift. Do it. The seized opportunity renders joy. The neglected brings regret.