When entering endgame, change your plan!
Of course, everyone has a plan but is it the best one?and can you keep it all along?
In the below position, I was quite happy to disrupt black development with my rook on the 7 and 8th row and I didn't look further
With hindsight I should have played Bf7 to take the g pawn and have a passed pawn.Instead the game went on and I was lucky to win with such a small advantage.
Conclusion: remember to pause across your game and reconsider the position. When entering the end game it is a completely different game and you might want to change your plan.