Whether you're striving to fulfill a long-held dream or resolve a vexing problem, I'm here to tell you one thing: you can do it. There's really no way around it. You have no choice but to believe you're capable of doing it; otherwise, you won't get very far. Yankees great Yogi Berra once quipped, "It ain't over till it's over." What that means is that until you've thrown in the proverbial towel -- until you've given up -- you have a fighting chance at success. Instead of sitting around and serving up excuses for why you can't do something, try a different approach. With every unsuccessful attempt we gain more wisdom and experience, making us a bit more likely to triumph next time. Positive thinking attracts positive outcomes. However, success doesn't come without hard work, persistence, and sacrifice. It usually requires a serious investment of some resource -- whether time or money -- that we may not always be inclined to...