1:  Enthusiastic Effort in advantageous states greatly helps.
2:  Joyous Awareness of the body as only a transient form is to be cultivated.
3:  Contact as the cause of mental fermentation & clinging is to be recognized.
4:  The Conceit: 'I Am (my Own Body or Mind)' is to be extracted & eliminated.
5:  That Irrational Attention leads to loss & decline is to be thoroughly known. 
6:  Rational Attention, discriminating cause & effect, is to be directed to.
7:  That Immediate Absorption of mental Concentration is hard to penetrate to.
8:  The Certainty of unshakable, & assured knowledge is to be sought & reached.
9:  That all being in existence is maintained by nutriment is to be fully learnt.  
10: Absolute & Irreversible mental Release is to be realized & fully entered.

These 10 things are real & true helpers, exactly so & not otherwise,
perfectly discovered & formulated by the Well-Gone-One...

  

1: http://What-Buddha-Said.net/drops/III/Energetic_Effort.htm
2: http://What-Buddha-Said.net/drops/III/Awareness_Sati.htm
3: http://What-Buddha-Said.net/drops/II/What_is_Contact.htm
4: http://What-Buddha-Said.net/drops/Conceit_I_Am.htm
5: http://What-Buddha-Said.net/drops/II/Careless_and_Irrational_Attention.htm
6: http://What-Buddha-Said.net/drops/II/Careful_and_Rational_Attention.htm
7: http://What-Buddha-Said.net/drops/What_is_Right_Concentration.htm
8: http://What-Buddha-Said.net/drops/II/Curing_Doubt_and_Uncertainty.htm
9: http://What-Buddha-Said.net/drops/II/Origin.htm
10: http://What-Buddha-Said.net/drops/II/Beyond_Release.htm

Source: The Exhaustive Speeches by the Buddha. Digha Nikāya 34
http://www.pariyatti.com/book.cgi?prod_id=25103
http://www.accesstoinsight.org/canon/digha/index.html

The 10 Helpers of deep Understanding!