Слезами горю не поможешь

a) It is по use indulging in sorrow that cannot be helped. See Что о том тужить, чего нельзя воротить (4); b) Tears and complaints are of no help, to find a way out you must act, not cry. See Москва слезам не верит (M)

Var.: В слезах горя не утопишь. Плачем горю не поможешь

Cf:

a) Don't cry over spilled milk (Am.). Don't grieve over spilt milk (Am.). Never grieve for what you cannot help (Br.). No weeping for shed milk (Am., Br.). Tears bring nobody back from the grave (Am.). There is no use crying over spilt milk (Br.). What's gone and what's past help should be past grief (Am.)

b) Action is worry's worst enemy (Am.). Crying will not mend matters (Br.). A good relief for grief is action (Am.). The only cure for grief is action (Am.). Sorrow will pay no debts (Br.)