The ads that do not work for one audience won't necessarily not work for another audience. If you had decent ads on a campaign that stopped working, test them on newer audiences.
Invest five minutes at the start of each day in planning out the primary tasks for your day. Within one year, your own personal productivity will be unrecognizable.
Invest five minutes everyday testing just one new variation of your ongoing ad campaigns. A new image, a new headline, or even just a new audience. In a year, your business will be unrecognizable.
We talked about testing ads. Then we talked about testing audiences. But do not forget to test media and/or platforms. If everyone's advertising on Facebook, maybe you'll gain traction on banner ads. The very media that you wrote off because experts told you banners were dead.
Testing ads is the key to winning. You are always losing a little bit of money on the table. Most of your ad budget is wasted because those ad impressions fail to make... well.. an impression on your audience. With testing, you can constantly figure out ways to minimize waste.
Invest five minutes everyday systemizing just one aspect of your business. Whatever takes up most of your time via manual,, grunt work. If you do this every day, in a year your entire business will be unrecognizable.