When we talk of fulfilled life, we refere to a summary one can make at the end of his life drawing a conclusion that life has been as they wished. Although not every accomplishment was 100 per cent, in summary, they could attain their goals, live happily, see meaning in what they did and are satisfied with who they are and what they are laeving behind when they die.
Fulfilling life in contrary is not a summary of ones life, but an evolving process. The individual defines what makes them happy and gives them meaning in life. Optimally the individual establishes for themselves their mission here on earth. With the aid of a mission statement, one is guided to engage in activities, interactions and relationships that keep him/her on track. Staying on this track brings happiness and satisfaction, no matter what cicrumstances we go through.
Striving to attain and keep an equilibrium on our track towards our mission statement, we live a fulfilling life.