According to Agama and Nigama,
The seven secrets are,
1.Phalshiyati siddher prathama lakshana
2.Dvithiyo shraddha yuktham
3.trithiyo Gurupujunam
4.chathurtho samatha bhava
5 panchama indiryanighraha
6 sasthamancha pramitha ahara
7 sapthama naeva vidhyathe.

first is firm determination.the first thing if we want to succeed,we should have a frim determination.
second is shradha. shradha means sincerity. total commitment to the work is neccessary.
Third is Gurupujanam. You should respect your Guru and follow his instructions.
Fourth is samatha bhava. samatha bhava means balanced mind. You should  not be over exited or depressed in any situation of your life.
Fifth is indriya nigraha. you should have proper restriant over your sensory and motor organs. if not there will be over indulgence and our engery will be diverted and divided, we will not be able to concentrate on our Goal.
Sixth is pramitha ahara. Pramitha ahara means balanced diet. your food should be nutritious and it should be in right quantity. too much or too less will distract you.
Seventh, if we follow these six things there no need for the seventh .

This shloka is quoted from Lord Shiva teachings.