Organizers and planners have always been my helpful companions. When I write things down, I know I will do them and how much time I'll lose for a certain thing. Your productivity will boost and you can be surprised at how much you can do in one day. Don't go overboard though- there's a big difference between being productive and being overburdened. Today you can find lot of free online versions of planners and timetables (such as here or here) or you can make your own.
Decide what is important and what is urgent. You can use The Eisenhower Method for this or you can focus on other methods. One has already been mentioned in #1, that's writting down a list of tasks. Why not writing down a list of what you shouldn't be doing unless in free time (for example, status update on Facebook)? You need to know there are a lot of 'time stealers' and 'time savers'. Learn how to identify them. If you can make a telephone call instead of writting an email, then do it.
Other method is GTD (Getting Things Done): set tasks by urgency and start with those which are important but don't take much of your time. In the end you'll have all the time to focus on things that are time-consuming.
Plan things/make posts in advance. Sit down for a moment, take your planner out and write down ideas and dates of posting. Then take that extra hour from watching a new tv-show and take photos for this week's posts. I know some people feel very doubtful about this and worry how posts will turn out uninspired and how this will show in text etc. But if you write a post in a moment when you feel inspired then posting it a day or two (or week or two) later will not look like spiritless. Besides, see how weightless you will feel, having posts already written.
Keep up with things and have everything scheduled. When you have your posting schedule figured out (let it be 6 or 1 post per week), don't change it every other week. It's good when a reader (me included) can anticipate a new post.
Reply to emails. When brands approach me, I first try to sort out those who are in the same 'industry' and those who are not. It's understandable if I own a fashion blog, I won't be writting a review on a screwdriver. Just an example. Still, I would be politely replying to emails wether it's a declination or acceptance.
What do you think of these tips? Should I include some more?