As a veteran of shift work and early morning starts, the best plan I put into action was having a hot shower immediately I woke up. The first minute is hard then it gets easier as your skin sparks your brain into action- most important.
The next thing I've spotted in your post is worry. That is non productive- it will however give you ulcers one day. Time to address that with a change o thinking and therapy i you can afford it. I got therapy or it in 1987 and use those lessons daily.
We cannot diagnose here but I'd visit your GP and discuss your sadness with him/her. I have bipolar but I also have dysthymia which has a deep sadness about it, had it or decades and now I have a small amount of meds to counter it- serious life changing result. Sometimes you have to chase these symptoms and really make effort to find out what is going on. So at 54yo I found out- best to do something long before then Sport.
Therapy also taught me to stop "saving the world" a comment made by him. I was running around worrying about other people so much I neglected myself.
I hope I've helped, repost anytime, even once you get professional help you can use this forum to chat about your issues in between visits with some practical advice. Some work has to be put in to get result however, it wont all be easy.