They say women are better in multi-tasking than men. I say if you want to get something done, something that matters, you have got to do it one at a time. Focus is the key and luckily both men and women can do just as well. If you focus on a single task, it's way easier to get started. Shut out the distractions and concentrate on the task at hand.
It also helps to get you into the flow. It's like a mental state where you are fully immersed by what you are doing and sometimes referred to as the zone. Programmers often get into the zone and lose track of time.
Another benefit of this approach is that you can prevent yourself from getting the idea-to-idea syndrome. You spend your time and effort on execution instead of coming up with new exciting stuff to do.
Most importantly, by doing one thing at a time, chances of completing the task is way higher. All these small victories will slowly build up your momentum and confidence.
Time to get started on your goals and ideas, one at a time.