You know how many people who fully committed themselves to becoming a billionaire AT LEAST ended up becoming a millionaire or multi-millionaire? Every one of them. But most people don't get it. Most people still set "small realistic goals." You can't be like that if you want the kind of life that people would kill for. You have to redefine what's "realistic" and learn to visualize what's possible, which is every f*cking thing you can dream up. So set massive f*cking goals!
How can you keep yourself from feeling like sh*t? There's one thing you can do - or not do - with your mouth that will not only help you preserve your energy and increase your self-respect, but will improve the overall quality & outlook of your life.