As Shantideva says, suffering has many good qualities because it purifies our negative karma, increases our renunciation and compassion, reduces our pride, and helps us to overcome our bad mental habits. If we think in this way we will feel that difficult circumstances are our best friends. When our mind is balanced in this way it becomes as stable as Mount Meru, and nothing can cause it to shake.
Geshe Kelsang GyatsoWe need to keep a constant watch over our mind and learn to distinguish between the beneficial and harmful thoughts that are arising moment by moment. Those who are able to do this are truly wise.
Geshe Kelsang GyatsoJust as eagles soar through the vast expanse of the sky without meeting any obstructions, needing only minimal effort to maintain their flight, so advanced meditators concentrating on emptiness can meditate on emptiness for a long time with little effort. Their minds soar through space-like emptiness, undistracted by any other phenomenon. When we meditate on emptiness we should try to emulate these meditators.
Geshe Kelsang Gyatso