Learn to say "no" and "slow." Determine what's really important and choose carefully. What can I eliminate for a season? What can wait? What really conflicts with my longer-term goals? It's okay to slow down. Most mistakes occur when we're rushing to cram too much work into a tight schedule. Hint: It's actually faster to just slow down and take things at a more relaxed and proper pace.
Sweet spot, sweet space, sweet scale. Find a standard place and time together to work on sewing and blogging. Set times when you're at your peak, not leftovers. And remember that you can't get everything done. Nor can you do it all in a day. Write it down, scale it back, and make sure it's achievable -- with the necessary quotient of happiness.
Organize a season ahead. Look ahead to what you'll need for the next season, next trend, and next type of product to carry. Get all the material, notions, and thread together well in advance. Don't let things sneak up on you or get out of hand -- or wait to clean up; inevitably, you'll get confused. It's worth the effort to keep it clean and well organized as you go. And those nagging, unfinished objects you know you're not revisiting? Separate them back into your stock!
Make a muslin, then take a break. It's very easy to get confused when making complex pieces.Take the time to mock it up and work out the kinks. And practice some complementary hobbies that can supplement your blog, your skills, and your emotional fitness. If you tailor with fabrics, add quilting. If you blog, add high-quality photography to your repertoire. Put some creative space between your prototype and your product; your sewing results will start to be better than ever!