I'd recommend a once over by a physician or naturopath and get your hormonal levels checked. Thyroid levels TH3 TH4, Estrogen, Progesterone and their precursors and metabolites, DHEA ,Testosterone, Adrenal hormones, Vitamin D.
Meditation did help me. As did Lavender on my pillowcase. I rested whenever I could, put my feet up and closed my eyes on my coffee breaks, napped whenever I could. Limited my caffeine intake. Got lots of touch therapy through massage. I simplified my life, if it didn't add to my life. out it went. I learned to ask for help and say the word " no". I didn't take anything on for a long while, just took care of the basics. I let a lot of things go, that weren't critical to my or my family's well being.
I am slowly now doing a little more than that, though not much. I still tire very quickly and don't have a big reserve of energy.