Alright so there ' s no quick fire way to overcome depression but first off you should be going to see a GP , getting medicated and undergoing therapy . Secondly is regular exercise , eating correctly plenty of vegetables ! and proper sleeping habits remove your tv or computer from your room . Don ' t use your phone in bed etc . Aim for 810 hours a night . Thirdly I ' d reccommend volunteering . Get purpose back in your life . It may not fix it , but you ' ll be doing a hell of a lot better than you otherwise would be . <| sep |> I would love to make a meal of you <| sep |> Do materials fail at their true stressstrain or engineering stressstrain ? Why ? What do books mean by critical material stress is defined as the ultimate tensile strength of a material expressed as a true stress . Where does engineering stressstrain fit into this ? Edit Added another question .