used when describing your state of mind when you are physically ill

I'm well enough in myself (= happy) - I've just got this nagging headache. 我精神状态很好——只是这头痛的毛病一直没好。

I've definitely been feeling better in myself these last couple of days.

I've felt better in myself since I changed my diet.

I feel a lot better in myself and I put that down to my new regime.

I'm still quite tired but definitely better in myself.