You vent away. "The Change" throws up all kinds of feelings.
Did you have any warning that your ex-husband intended to leave? Relationships need to be mourned over. Did you have children or have you relatives close by?
Have some 'me' time! You are allowed you know. Don't do it for anyone else.
Maybe treat yourself or ask for a birthday gift - I am thinking about a session at one of those 'make up' counters in large stores. There are many ways of lifting a skin tone etc.. If you have used make-up for years, you may need to update the shades to something more 'age' appropriate. Near where I live we have several large stores as well as private companies that offer advice on make-up, hair colour etc.. I had my toe nails coloured for example and this particular company offer all kinds of 'me' time sessions.
Spas might be a way of getting advice too. You don't have to make appts. for treatment but there should be encouragement available as well as leaflets as to what is available over-all.
Long hair can make ladies of a certain age look weary. Hi or low-lights can be useful. Maybe pop into a hair-dressers and ask advice? You don't have to book an appt. immediately; maybe choose one that has wigs - I had great fun trying on various lengths to see what might suit: at the time my hair was below shoulder length. I went for a short cut followed by a perm eventually

. If you remember Crystal Tips and
Alaisder ..........

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I am glad that you ditched the man who emotionally controlled you, not easy to do but you saw sense

Go through your wardrobe. Put clothing into groups/colours and decide, if you wear jewellery, 2 maybe put that close by. Shoes can make a difference to how we stand, walk and present ourselves (I could solve 85% of women's back problems ;-) ) .........