Positive thinking is useful, but highly overrated. Being truly successful does not require winning the positivity pageant. Being unsatisfied is healthy too. My whole life is an engine of dissatisfaction. It's why I wake-up in the morning. If you are unsatisfied, moody, discontented, and the song in your heart sounds more like a long frustrated moan, it's fine — groan, grumble, sigh, even growl. But, don't forget this; you are more. Real success is found in the balance of all things. Be fair with life, inasmuch as you wish life to be fair with you. Make your contentment equal to your discontentment. Voice your praise-filled gratitude as loudly, as your shouts of foul. Pray or give thanks in your own way, as earnestly as you bemoan your woes. Savior and sigh in the bliss of affections, as gutturally as your furrowed growls. Shout glory, Hallelujah, or thank you, thank you, thank you, as fervently as your most exquisite rage.
— Bryant McGill
post "How to achieve true success in a difficult world"