Hang in there is what you tell somebody struggling: keep going, do not quit. Hang in there, tell her to hang in there, just hang in there.
It is encouragement rather than advice, since it offers no method, only company. It is American in origin and informal, and it works best said briefly.
1phrasehang in thereWhat you tell someone struggling: keep going, do not quit.
“Two more weeks of this, so hang in there.”
hang in there is a phrase.
Practised in Idioms