Time management is needed especially when doing some real work. Being unable to meet deadlines means losing money.
1.) Prioritize your task and set realistic time frame.
2.) Being able to accomplish one task within that time, gives your motivation to accomplish more.
3.) You then become a more reliable and disciplined person.
But don't sacrifice quality over time. Adjust your time frame if you have to.
Set realistic goals, make plans and follow it.