Be patient | Maintain a steady pace
Learning to be patient is possibly the most important ability of all. If you are steady and patient, you can achieve great progress.
If you're working out to gain muscle, you should probably go slower than you think. If you're going to start making daily sales calls as part of your business strategy, you should definitely start with less than you think you'll be able to handle. Patience is essential. Do activities that you will be able to sustain.
New behaviours should feel natural, especially at first. If you stay consistent and continue to build your habit, it will get difficult quickly. It's always the case.