Identify negative habitual patterns.
Cut the roots by bringing mindful attention repeatedly to the causes of these.
Step by step, create opposing causes, or plant fresh, vibrant and positive seeds in the mind, again, do it repeatedly.
Its like pouring clean, clear water unceasingly into a muddied pool. Every subtle layer which gets dislodged means that some purification is taking place. Look for the effects of this process, again, by bringing mindful awareness to habitual traits in body, speech and mind.
Turn all mundane activities into enlightened activities of purification.
When you sip tea, visualize that the tea is ambrosia or nectar from buddhas and enlightened dharma protectors.
In a shower, visualize the water streaming over your body to be healing balm, clearing all your subtle waste into Yama, who then eats up the negative impurities and transforms them into enlightened sustenance for his horde of angelic beings and demons.
When you have a meal, dedicate it as a blessing from the gods of the blissful realms who make it possible for you to derive satisfaction from hunger, and if you think its not a waste, each time before you start eating, bring a small portion of your food and leave it outside the window or in open spaces, that it may help pacify beings in other realms, from animals to hungry ghosts.
When you get dressed, imagine you are putting on a coat of armor made of a thin layer of impenetrable diamond, and your body embalmed in white, red and blue lights streamed down from the forehead of your protector deity (if you have one. If not, find one).
Each time you sense of hearing is engaged, visualize all sounds as mantras.
When you find you want to express yourself, visualize yourself as an enlightened being, using your words as means to purify both yours and the mindstream of others. Watch each utterance carefully, and speak in a way which promotes peace, harmony and encourages virtue in others.
As you awake each morning, spend a few minutes before you get out of bed to visualize your Blessing Deity departing from the center of your heart, traveling up the central channel, arriving to the summit of your crown, where a rainbow-colored lotus opens up to welcome the seating of this Blessing Deity. Then visualize each petal emitting dazzling white light in all directions, bringing healing to your parents, your siblings, your immediate relations, your dharma friends, your enemies, together with all beings in all the 6 realms of existence, and see that they achieve peace and happiness from receiving this kind gesture of blessing from your Deity.
As you make your way thru the day, try to maintain a subtle awareness of this Deity resting on the crown of your head. Increase your awareness each time you feel negativity seeping into your thoughts, words and deeds.
When you return to sleep at night, visualize bowing and prostrating to this Deity, thanking him/her for looking out for you and keeping you safe and positive, and welcome him/her back to the sacred space you have created within your heart, where an adamantine, jade green lotus awaits.
Repeat this process unceasingly.
Edit to add: If you can accept the healing power of stones, then work with Lapis Lazuli and Kunzite. Place them strategically around your room or house, and wear a pendant made from either of these stones. Or request/purchase a sacred amulet from a temple, or from e-shops, but make sure its blessed. This site is good:
Edited by CowTao, 13 September 2011 - 06:15 AM.