My dear Janine,
Meditate on the shortcomings of the self-cherishing thought, as explained in the lam-rim (Liberation in the Palm of Your Hand, the Lamrim Chenmo, and the Wheel of Sharp Weapons.)

Watch the mind in everyday life, how it causes obstacles, not allowing your actions to become the cause of enlightenment. Not only that, but it doesn’t allow your actions to become the cause of liberation from samsara, not allowing you to become the cause of happiness in future lives.

This means it becomes only non-virtuous negative karma, which causes only suffering.

The other part, which is very IMPORTANT, is to meditate on the kindness of sentient beings, who are extensive, are like a mother to us, and kind (the seven-fold instruction of cause and effect).

Try to realize how these beings are so incredibly precious. The more you realize this, the more your attitude to sentient beings will be caring and cherishing. Then, the action of working for others will come naturally.

Doing Vajrasattva retreat at Kopan comes out best for you.

With much love and prayer...