Lama Zopa Rinpoche continued his video teachings on thought  transformation from Amitabha Buddhist Centre in Singapore in August.  Here is a summary Thought Transformation video #132, offered on August  14, 2022: Make your suffering into the best happiness, Rinpoche urges us. All of  the pain we face in life came from our mind—our self-cherishing thought  with attachment, anger, and ignorance harmed others and now we  experience the evolution of that. We can use our pain as a cause to  achieve enlightenment, not only for ourselves like taking drugs for our  benefit alone, but for all sentient beings. This is so important to  write down and remember every day. When something undesirable  happens, remember this. Whether physical or mental pain—we can make  it into the best happiness by enjoying it. Every single suffering of all  sentient beings we take onto the path of enlightenment. This makes life so  happy.

Whenever we see a suffering sentient being we can do this, we can  practice tonglen, by sincerely taking on other sentient beings’  suffering and giving our happiness to them in return. Each time we do  tonglen, we collect more merit than the sky and become closer and closer to enlightenment, and more and more distant from samsara. 

The goal is to experience the suffering of sentient beings so that they  become enlightened, free from samsara. While there is pain, death,  relationship problems, etc., we experience it for all sentient beings,  for them to be free from suffering and achieve enlightenment.