my time management

In all honesty, my time management isn't that great.
I often tackle assignments, chores, basically everything as it comes. Thats where my problem kicks in, I know I shouldnt handle these assignments in this manner. But , Iv'e grown accustumed to doing everything this way.
my next challenge is, how to over come this habit? I do not have confidence in my approach. Hopefully I can learn how to better manage my time. Maybe some prioritiseing skills as well?

^This is in the direction of how i handle my school work.

Now, in my social life: my technique on how I tackle things are easier to apply.