I love this mediation: Meditation to Heal from Negative Energy, by Doreen Virtue. I listen to an audio on my way to sleep most nights, and I am pretty sure I listen to this one at least 2 times a week, some weeks more often than that if I find the need to give it a listen during the day as well.
I find it really works well to clear out any ‘junk’ from my energy and from my home as well. It is perfect for those days when I have encountered people that have a bit more negative energy than I am accustomed to.
Give it a try, it can clear energy from, situations, work, relationships, places etc.