Purity is developed through caring. You need to care about light and the matters of light, truth, religion and spirituality.
Without that poise and balance and gentle humor and caring sense, nothing happens at all. It's just egotism and vanity and jealousy and possessiveness.
What will really release the kundalini is creating a stillness in your life. This stillness will come about through deep caring and introspection. It will come about slowly and then quickly - it builds momentum.