You've jumped ahead massively.... Rather Tassawuff is to conquer one's ego successfully. Adhering to Shariah is a given and the oxygen required to obtain the right results in the quest. in sum, discomfort is the central medicine administered in copious amounts, but most of the Ummah has adopted a life of complete comfort. There is no easy way to obtain removal of diseases of the heart other than Dua, effort and waiting for Allah to Gift it to you. The real people of Tassawwuff are mostly hidden because people don't deserve them. As for your question how do they know your progress etc. The People Qualified in this Science are people of States, Gnosis and unveilings and hence they are shown who needs what. If they are far from their students, it is not a big thing because the light of the sun travels great distances instantly so what about the Light of the Knowers of Allah? My Advice, make a Dua to find yourself and to be shown how to change yourself......may be just may be you might find a Knower of Allah along the Way.