This is an excerpt from Tibetan Yoga and Secret Doctrines:

III. THE TEN THINGS TO BE DONE

(1) Attach thyself to a religious preceptor endowed with
spiritual power and complete knowledge.

(2) Seek a delightful solitude endowed with psychic influences
as a hermitage.

(3) Seek friends who have beliefs and habits like thine own
and in whom thou canst place thy trust.

(4) Keeping in mind the evils of gluttony, use just enough
food to keep thee fit during the period of thy retreat.

(5) Study the teachings of the Great Sages of all sects
impartially.

(6) Study the beneficent sciences of medicine and astrology,
and the profound art of omens.

(7) Adopt such regimen and manner of living as will keep
thee in good health.

(8) Adopt such devotional practices as will conduce to thy
spiritual development.

(9) Retain such disciples as are firm in faith, meek in spirit,
and who appear to be favoured by karma in their quest for
Divine Wisdom.

(10) Constantly maintain alertness of consciousness in walking,
in sitting, in eating, and in sleeping.

These are The Ten Things To Be Done.