Maulana Wasiyyullah rahimahullāh used to say: “Everyone can become a Wali (friend) of Allah, but everyone cannot become a Shaykh.”
A Wali will be told to take a particular medication and asked to abstain from certain actions, but this is restricted to himself. However, a Shaykh has to relate to the problems of others. He is required to diagnose different ailments and then to treat each one of them accordingly. Thereafter, he will have to correctly guide them to the truth. This task cannot be accomplished by one and all.
[Malfoozaat, by Mufti Mahmood Hasan Gangohi rahimahullāh]