My Car Shakes

I talked to an automotive repairman today about the necessity of getting a tune up. I had a horrible shaking problem with my own car that he stated I could have been avoided if I would have came in as soon as I felt the shaking. He also stated that people ignore the same problem and bring in there car when its too late and more money must be spent in the end compared to if you got a regular tune up to help avoid these problems.