I felt disconnected from my sense of self and identity, cut off from projects I had ideated, designed, won funding for and was in the middle of leading, disconnected from my teams, from ideas.
It sounds like your sense of identity is closely tied to your work ability (which I'm not criticising, as many people don't have the skillset required to manage large complex projects and it is an impressive feat). In my case, however, I became disillusioned when I reached the stage where I felt that my efforts were ultimately just contributing to the shareholders having bigger boats/nicer continental villas - mainly rich men.
Each to their own, but whilst women are undoubtedly socially conditioned towards parenting, I don't think it necessarily follows that most men inherently yearn for the worth in being a 'successful businessman'. Of course some like the status, but most blokes I know do it more to provide for their family - perhaps it is more that men find it hard to shake the assigned role of 'provider'.
I guess what I'm partly saying is that I've encountered many women who feel that part of attaining equality with men is to be able to 'do what they do'. I definitely think that they should be free to do so and not have the opportunity obstructed, but I think it's a fallacy that 'being more like men' is the key to happiness and equality.
I think the best solution may be to meet somewhere in the middle. One thing's for sure, that women have been self-reporting lower levels of happiness decade upon decade, and I do sometimes wonder if it's because the grass isn't really greener (despite a small percentage of men still undoubtedly 'running the world').
On the other hand, maybe many women have just 'women up' to the reality of our society and don't like it now the veil has been lifted, so to speak. Maybe hormonal differences/evolutionary traits also have an effect - there is much evidence out there about the effects of testosterone on behaviour, despite what Cordelia Fine argues. I sometimes wonder whether certain men even know themselves why they have this strong drive to 'conquer' other men (and I believe this may be as much a part of it as the subjugation of women - i.e. being the top monkey).