Anna, I so get it, and was nodding along with all the suggestions above. I especially love what Ledonna and Debbie wrote: self-care and being kind to yourself + making that list (what an excellent idea!). I know your life is hectic and super stressful, and at times like these we often think there's no time for self-care and relaxation when that's when we need it the MOST.
I agree that the new hair colour would be amazing on you. That in combination with finding just a few looks (going the online ordering route) that make you feel like your fabulous self again might go a long way in getting that spring back into your step.
P.S. The trip sounds super exciting!