Gungtang Jampai Yang, a very high lama from Amdo in Tibet, said:
The essence of Losang Gyalten (Lama Tsongkhapa’s teachings) integrates listening, reflecting and meditation into one. If you attempt the collecting of merits and purification, the background support, then buddhahood is at your fingertips.
This is how to practice to achieve enlightenment and how to achieve enlightenment quickly.