Heart is the place of emotion, ego, and attachment. You have to rise above all the propensities of the heart. Clean it thoroughly, surrendering it to God through regular prayer and meditation, and through sincere and steadfast effort.
Purify the heart through deep meditation.
Self-knowledge (wisdom) is beyond perception of the senses - it can be achieved through deep meditation only.
Eating too much, not eating, and fasting too much are obstacles for meditation.
Meditation is to go beyond all thoughts.
You recharge your body and mind in prayer and meditation. All of your actions in this world should be done with that inner consciousness.
Meditation has two aspects: one with eyes closed, experiencing the endless ocean of calm and peace, and the other with eyes open, to feel that calm everywhere.
Incompleteness breeds restlessness, while completeness is inner fulfillment. It is to be experienced through deep meditation.
When you go to the gas station to get fuel it takes only a few minutes to fill the tank, and the fuel keeps the car running for quite some time. Meditation should be practiced in that manner.