Not feel yourself Definition 1 of 2Pro Tip 1/3Physical State Use when feeling physically ill, weak, or affected by health issues. After the surgery, I just did not feel myself for weeks. Pro Tip 2/3Temporary Change Implies a short-term change in how one feels, not a permanent condition. I didn’t sleep well last night and do not feel myself today. Pro Tip 3/3Subtle Distress Can express a mild, hard-to-define feeling of being unwell or 'off'. There’s nothing specifically wrong, but I'm just not feeling myself.