TFS! Having a positive attitude may not always fix your woes but will always make trialing times seem more bearable and happy times more jubilant.
At times of ease it pays to appreciate all your blessings and be happy for all you have and what you have achieved rather than grieving over what has passed you by. Enjoy life's highs..you are worth it!
And at times of hardship remember the saying“What doesn’t kill me makes me stronger.” or as we Muslims believe "Allah lays not on anyone a burden they cannot bear" When you realize this,any pain, no matter how harrowing, will appear far more endurable.