I'll be the first one to admit that sometimes I have a tendency to dwell on the negative. I harp on what could go wrong instead of what could go right. It's this kind of mindset that often leads to failure and disappointment. But why should we be pessimistic at all? In the grand scheme of things, it does us little good. In fact, negativity is known to induce depression, lack of self esteem, and other negative outcomes. The best thing you can do is harness that negative energy and turn it into something positive. Go to the gym and enjoy a vigorous workout. Blast the music loudly. Look at pictures of baby animals. Do whatever brings a smile to your face, all while telling yourself "I can do it. I will get through this. I will prevail." Teddy Roosevelt, the 26th president of the United States, once quipped, "Believe you can and you're halfway there." I think negativity begins to set in once we feel we're no longer in control of our lives. But it d...