What you give out comes back 10 fold - this can also be regarding "bad" stuff (however you define "bad") so make sure you're not sending out vibrations for the Universe to return 10 fold.
If you develop only one metaphysical habit, it should be to list your gratitudes every single day. I recommend you use the free software I offer - the Gratitude Journal. But if you don't choose to use a software program that's fine too. You can use a notepad (electronic or paper) but the important thing is to do it every day. At the end of each day you should list 3-5 things you're grateful for that have happened in your life. Also make it a habit to express gratitude for 3-5 things you "know" are going to come your way in the future. This is one of the fastest ways to make things happen.
Make a commitment to do your gratitudes every day for the next 30 days just to see if there is a difference in your life. I bet there will be. Your vibration will be so much higher and it won't take hardly any effort to get back up to a high vibration should things start to turn the wrong way. Sitting at a very long traffic light? Starting to get irritated because "you've got places to go and things to do"? Start saying your gratitudes and concentrate on the things that are going to come to you. Before you know it, the light will change and you'll be on your way feeling much happier.
Things not going well at work? Start your gratitudes. It's amazing what a calming power saying your gratitudes has. It turned my life around 10 years ago when I was getting ready to retire from the Navy and move to San Antonio. I was experiencing such anxiety and couldn't find a house and was so scared. I was to the point where I was going to give up and not retire at that point even though it was what I really wanted. So, on my next to last night, as I lay down to go to sleep, I decided to say my gratitudes and just started with being grateful for my parents, my brother even though estranged, my health etc. And when I ran out of them, I just started over. The next morning I woke up calmer than I think I ever had been. The result - I found a house that was totally perfect and was essentially filled with the components I had either had in my other houses (the components that I loved) or that I had envisioned. The funny part is that for "normal" people, the layout of this house would most likely have been a turn off. But to me, it had everything set the exact way I wanted it. Totally amazing. But what I do know is that the Universe heard me being grateful for everything I had and it gave me back all of that many times more than 10 fold.
Try it, I promise you'll see a difference!