Why do we worry? When Allah has promised to take care of the affairs of those who put thier trust in Him? Worrying over matters we have no control over is from Shaytaan. Rather, put full trust in Allah and keep telling yourselves that Allah is controlling everything! Make Dua'a.
You can do anything but not everything quote - daily mantra - It's National Stress Awareness Day. What is Your Mantra For Dealing With Stress? Answer here: http://www.levo.com/posts/what-is-your-mantra-for-dealing-with-stress