20 years

What is the thing that you have been doing for the past 20 years?

At first you didn't / never expect it would be succeeded. Along the way, there were doubts and encouragements. Most importantly, deep down inside your heart you knew: this is it! The mixture feelings gave you the strength to carry on. Time flies and there has been 20 years since the day you started. And now, you hope you can go on with it till as long as you can.