Your power is in the present. This is one of the reasons meditation is such a powerful and life-changing practice, because it trains the mind to be in the "now" which is where your true power lies. Law of attraction works "now" not yesterday and not tomorrow. You can certainly manifest tomorrow what you focus on today - but it is where your thoughts are directed today, right now, that determine what you are in the process of creating.
If you ever want the universal laws to work in your favor, the one key concept you have to grasp and start working with actively is on being aware and fully present. That is hard to do in a world full of distractions, stress, and other obligations. It's difficult, but not impossible. One great way to do this is to call yourself to attention several times per day. Stop what you are doing and really focus on where you are, your breathing, your surroundings, how you feel, and where your thoughts are going. Bring yourself to center and stay there for several seconds - like freezing time for just a moment. When you make this a regular habit you will begin to notice how much of your life actually passes you by each day without a second thought.
This exercise can help you learn to establish mindfulness, and it can also help you to feel empowered and inspired. Full and present awareness relieves stress and anxiety, calms the mind and body, and helps you to be more conscious of where your thought energy is going. If you have trouble calling yourself to attention - set alarms to go off a few times per day. When it goes off stop and be fully present for a full minute or two before resuming your normal activity. It will truly be an eye opening (and mind opening) experience.