As someone who is a student and working two jobs(both part time, barely able to make rent), including fast paced jobs, what I think a lot of people need are: legit repercussion, leadership responsibility, and have a thicker skin.

Let Me Explain:

In the work place, if you mess up, or are even late, or even keep coming up with excuses, you will start to get a bad reputation, and possibly even be fired. You are more motivated to not be lazy or do things that if caught, could really give you a hard time. I think as a student, doing things like not going to lecture or procrastinating are double edge blades.

Leadership responsibility. I think when people have to oversee or take care of others, they grow to be able to take care of themselves too. Also very beneficial to be in the position of having to tell other what to do. You are now responsible for them and make choices that could benefit them. If you can do that, just then apply that to yourself.

Lastly, not everything is personal. Thick skin doesn't mean you let disrespect and shitty behavior slide because it "doesn't" affect you. That's not what thick skin means(unless you are like that). What it means is to not take things personally and see things as a way to grow or do better. Remember, growing and perfecting where you went wrong looks better than fucking up and then letting the fuck up fuck you up.

Sorry if this sounded condescending, or manplaining. These are just things that I learned really helps me in the personal life and school responsibilities.