The road to hell is paved with good intentions
Definition 1 of 1
Pro Tip 1/3Context Sensitivity
This phrase suits discussions about ethics or consequences of actions, not casual conversation. 
Making policies without considering the impact may prove that the road to hell is paved with good intentions.
Pro Tip 2/3Cultural Weight
This phrase carries a warning often used in Western cultures to caution against naive actions. 
He tried to fix the phone himself, and now it's totally broken. The road to hell is paved with good intentions.
Pro Tip 3/3Outcome Focus
Use it when stressing that good intentions are not enough if the outcomes are negative. 
Despite her efforts to organize the event singlehandedly, chaos ensued. The road to hell is paved with good intentions.