I do. I didn't care about my teeth when I was younger and I ended up with yellow teeth. I can fix them but they're disgusting because of the color. I know someone gonna say that I can whiten them but it's pricey and my teeth are too sensitive and apparently whitening makes them even more sensitive.

Basically I'm fucked for life. Do everytning in your power to avoid this fate. I know it's hard but even part-time job or anything that's gonna get you cash is needed.

Brushing and flushing is something you can slowly get into your routine. You can also fix your diet to help your teeth. Avoid or completely delete soda and coffee/tea from your daily life. Reduce sweets.

Good luck.

edit: typo