Falling and rising makes one better, i think their is difference between failure and a lossing.
I think failure means the individual's moral to rise is killed but losing in the other hand means the person can look up and hold a branch untill s/he is standing and then try again.
Yes lots of people are weak, setting goals and not achieving it. But sometimes it might not be their fault. Like you said we need to set an achievable goal for a time period.