I've actually had some really great success with using this as a motivator! When I was really young, I never took care of myself or my appearance. When I was 19, I made a few friends who decided to do a make-over for me, and it is actually what launched my goal to lose weight.
I have a really great stylist now, that I see every 8 weeks. We've gotten close for a client/stylist, and I'm always really excited to go in and tell her if I've lost weight, or I'll be really disappointed in myself, if the opposite is true! And that day, when I always look my best, I feel like it gives me a lot of energy for the upcoming week to try again if I've been off my diet.
In fact, I've totally changed since my late teens and very early 20s. Now I love fashion and grooming, and it's been a big part of my entire journey.
If you're comfortable going to the salon and getting yourself pampered, I think it can work for you too.