A true leader takes all harsh comments, open criticism and cynicism as the crushing of the puss by the expert surgeon, God, who through his representatives purifies us of our diseased false ego. Thus a strong leader doesn't allow potentially distressful experiences and emotional setbacks to dissuade him or her from the goal; rather such a leader marches on against all obstacles.
Lord Krishna explains that whether you have all material attachments, no material attachments or whether you desire liberation or not, you just approach Him; gradually you'd be purified and obtain the purest and highest state of consciousness. (Srimad Bhagavatam 2.3.10).