Many people get stuck where they are in life. While this can often be wrapped in terms like "being content", it is often just an excuse to be unmotivated. While you should certainly be content throughout life, you should never grow complacent.
Always ask yourself if you are doing all you can to advance the skills you have. Aim to learn at least one new thing each day. While most of these should be something significant, even small minor steps will ultimately take you to a better place than where you are today. It will also help you be a better steward of the skills and talents you have been given in this life. Note that significant things can often be small!
Avoid the pit that says only large achievements really mean anything. While this sounds great, it will almost certainly result in you not doing anything. Each small step is one step closer to a significantly better place.
You will have to determine what is significant for you. That may take some time, but it is worth figuring out. You also don't have to limit your steps to a single area. Some focus can be helpful to keep on track, but occasionally taking on a different learning goal may ultimately help you reach all your goals quicker. It will provide some needed variety in your life and your success in one area is almost certain to spill over into other areas. Good feelings tend to follow good feelings!
Don't let the size of the goal deter you either. Take a single step toward your goal and you will be one step closer!