Taking taekwondo again?

I was 13 when I started taekwondo and I took it for 2 months, ended at a white belt. Anyway I am 26, i have a job and I want to take it again, but my parents thought since I quit the first time, I might quit again. The reason for that is that I had school and i was doing so many activities, but now I am motivated to learn. So am I making a mistake or is it a good idea? Thanks