Not meeting revenue goals

Hi! I had a revenue goal of $15k in my business for December. The most I had ever done before that was about $8k. I ended up making a little over $7k in December because I lost steam—I stopped trying. So many of the things I had planned for December didn’t go as well as they did last year, and I made a fraction of the revenue that was projected. This just snowballed and my thoughts were like a mixture of “well I guess this will still be a good month at $7k//ugh no one is spending any money, nothing is working, I am so exhausted and I need a rest.”

I guess my question is how can I not hate myself for not making $15k but also make it unacceptable for me to give up on this goal/on future goals?