Once again, by no means an expert or a successful entrepreneur (by my standards) but after you have created an entrepreneur mindset, you should start working at growing as an entrepreneur. As cliche as it sounds, you have to work hard at success. With you slack off, you client/customer is going to get swooped up by an actual hard working entrepreneur providing the same product or service as you.
Here are my top tips:
DECIDE WHAT YOU ARE DOING AND STICK TO IT
Of course, this isn't set in stone but if you have set out several things you want to accomplish today, stick with it. Don't let your mind wander to responding to other emails or checking out the ad on Kate Spade's Surprise Sale with 75% off regular price items. Focus! This also relates to your weekly goals, monthly goals, and yearly goals. If you want to reach a certain goal by a certain period of time, not only do you have to work at it, you also have to not get distracted from working towards it.
DON'T WASTE TIME
We touched on not getting distracted in the previous point. This one is about not wasting time perfecting things that only you will see. Your inventory spreadsheet does not need to be muilti-colored and pretty. It needs to be functional for you. (If it NEEDS to be pretty for you to function, by all means.) Your marketing strategy does not need to be written as a proposal unless you are writing it for someone to lend you money. The time you save from not doing these things should be spent on income producing tasks for your business. Anything you do should eventually (not too far away) make you money.
DON'T WASTE MONEY
Spend money only on things that touch (not physically) your consumer or client. Spend money on your website but not on a fancy daytimer or business card holder. Buy these things if they help your business but if they don't, save your money. Without a doubt, you will find a better use to spend the money in the future. Positive cash flow is always the key.
LISTEN AND EVALUATE
You don't know it all and will have to listen to others with more experience. Best to listen with open ears and an open mind. You don't have to listen to everything you are "told" but you should at the very least listen and evaluate on your own.
MAKE A DAMN DECISION
This is your business so you call all the shots. Don't be asking others on what you should do. (This is different from the previous point. Re-read if you think it is the same.) Get the facts, think about it, and make a decision on your future and the future of your business. If you rely on others to make business decisions for you, you should just work for them.