Tony Robbins has a great time management method. RPM, Results focused, Purpose driven, Massive action plan.

Here's a snippet from it that I use. Every Sunday write down all the things you're going to need to do for the week. Then place a tick next those things you can delegate. After that schedule Each item for a particular day and finally, every morning make a rough estimate of how long it will take and schedule it in for a particular time.

It's alot of work in the beginning but pays dividends if you persevere.