How do you find motivation to do something when you think it's of no use but still have to do it?

Because goals, and the strength and improvemet that come with them are small yet steady.. One test an education does not make. . but pass the class and move on to the next goal . . .

College, school, whatever is a series of hoops to jump through. One at a time. little by little and then one day you wake up and your life is changed precisely BECAUSE you have stuck with that every day. . .

Boom, you have an education. .. your life has been changed, not because you made the decision to go to college. . .but to stay with it, day by day, test by test, class by class. .

I think about how my 6yr special ed student. Constantly moving. He's so brave. He keeps going when his pain tolerance is through the roof. I can't even imagine what it must be like to get staples in his muscles to help them develop correctly, he's 6! What a trooper!

Well I rather try then just give up. and who knows maybe lady luck will smile upon me and I succeed

You look at the task as to how it will benefit YOUR FUTURE.