Give yourself an energy cleanse. The color gold has a high vibration which is useful for clearing away foreign energy. Imagine a gold shower nozzle at the top of your aura (a few feet above your head) and turn it on, allowing clear gold energy to flow through your aura and body space and release down your grounding. You will immediately feel cleansed and refreshed.
Call back your energy. When we have our energy in our own space there is less room for other’s energy to enter. But as we focus on other people and projects we sometimes spread our energy around. Create an image of a clear gold sun several feet above your head and let it be a magnet, attracting all of your energy back into it (and purifying it in the gold energy). Then bring it down through the top of your aura and into your body space, releasing your energy back into your personal space.