To be a true sanyasi implying:

a. Burn all past – happy or sad. A sanyasi has no relevance left to world and worldly things of past, present or future
b. Constant focus on ultimate goal

c. Sole duty – promotion of truth and rejection of false, in world and self
d. Untiring efforts – inexhaustible source of energy

e. Transforming health, mind and knowledge
f. Completely ignoring all sensations except those leading to ultimate goal

g. Jitendriya – Complete control over mind
h. Discipline

Run faster and faster, and slow down not until the goal is achieved.