This is completely the wrong approach. You can't dedicate your entire life to one specific task and expect when you retire to suddenly be able to "improve the lives of the people around (you) without staying in the consumption treadmill" because all you know is the consumption treadmill. Thinking otherwise is just wishful thinking.
If you see yourself improving the lives of people around you later in life, which is commendable and the right thing to do, you have to start now, while you are still in your prime years. If you leave it when you are older chances are you'll be just another John waiting in line for the next Black Friday.
If you see yourself improving the lives of people around you later in life, which is commendable and the right thing to do, you have to start now, while you are still in your prime years. If you leave it when you are older chances are you'll be just another John waiting in line for the next Black Friday.