Post "Big Accomplishment" Mania

Hi. I just realized something I have been doing all my life and didn’t recognize it until doing the thought downloads. Each time that I have a big event – teach a class, give a presentation, accomplish something I’ve worked hard on I have this post event mania. I hesitate to call it mania but I can’t think of another term – maybe elevated arousal, flight of ideas, racing mind. Sometimes it leads to over eating, or over drinking just to bring myself down from the high. But it’s not a good high – it’s too much. I think this is a feeling. But I can place the thought. Relief that it’s over? Then I should be calm. My question is how can I accomplish big things without the highs and lows surrounding my accomplishment.