Tennis After Work

I am going to join a tennis tournament this Sunday.
My doubles partner is my friend from the same college.
Yesterday, I practiced tennis alone after work in the evening.
Doing exercise during that time is very comfortable because of the cool breeze and beautiful sunset.
While playing tennis, I thought that time after work passes quickly but time during work passes very slow.
In order to survive, I need to make some amount of money, so I need to work.
An idea always comes up to my mind that if I can make money after working a few hours, how my life can be more exciting.
I will study more to accomplish my ideal life.