Is it possible to use meditation to gain Self control?

I have planed my life and want to stick to it . But the problem is My self control . For example I tend to waste a lot of my time in youtube watching documentaries . You know it starts like I 'am going to do this for only 30 minuets and then loose the rest of the day watching videos or etc. I was wondering if meditating on my future goals could help . And I mean doing something like imagining how it would feel if achieved my goals and then imagining the consequences of wasting my time or uncontrolled life . Is this a good method to gain self control and achive my goals ? Is there anything else I can do ?