You would never talk to others the way you talk to yourself. You’re often unkind to yourself and you’re often inflexible, and you’re fault-finding and overcritical to boot.
You didn’t get where you are by being ‘soft’ with yourself, but this hypercritical stance doesn’t seem to be serving you at all these days.
And even though everyone around you thinks you ‘made it’, you feel less-than and undeserving, which only fuels your negative self-talk.