It is impossible to be stressed and grateful at EXACTLY the same time (completely different spiritual energy and chemistry). Give it a try: focus and concentrate on the thing in your life that you are MOST grateful for. Hold it, and dwell on it... Now what was it that you were so stressed out about? It's all about focused attention. If you don't want more of something in your life, then move your attention to something you DO want more of. For whatever I focus on, expands. Good day to you!
Catch it, come alive, pass it on.