It's not that talking about it [changes anything/makes any difference].
Talking about it won't make any difference/change anything.
It's such a waste of time to talk about it.
I thought I [bounced back/got back on my feet], but (it turned out that) it was not the case.
Talking about it wouldn't change anything.
Talking about it doesn't change anything.
It's no use talking about it.
I thought I got back on my feet, but I guess I haven't.
http://eow.alc.co.jp/search?q=%22get+back+on+*+feet%22