What if I don't want a spiritual master?
Srila Prabhupada answers this very question quite thoroughly here:
"One should always remember that a person who is reluctant to accept a spiritual master and be initiated is sure to be baffled in his endeavor to go back to Godhead. One who is not properly initiated may present himself as a great devotee, but in fact he is sure to encounter many stumbling blocks on his path of progress toward spiritual realization, with the result that he must continue his term of material existence without relief. Such a helpless person is compared to a ship without a rudder, for such a ship can never reach its destination.
"It is imperative, therefore, that one accept a spiritual master if he at all desires to gain the favor of the Lord. The service of the spiritual master is essential. If there is no chance to serve the spiritual master directly, a devotee should serve him by remembering his instructions. There is no difference between the spiritual master’s instructions and the spiritual master himself. In his absence, therefore, his words of direction should be the pride of the disciple.
"If one thinks that he is above consulting anyone else, including a spiritual master, he is at once an offender at the lotus feet of the Lord. Such an offender can never go back to Godhead. It is imperative that a serious person accept a bona fide spiritual master in terms of the shastric [scriptural] injunctions. Sri Jiva Goswami advises that one not accept a spiritual master in terms of hereditary or customary social and ecclesiastical conventions. One should simply try to find a genuinely qualified spiritual master for actual advancement in spiritual understanding."
(from Chaitanya Charitamrita, Adi 1.35, purport)