Thoughts without a healing heart are what make us do seemingly crazy things. Example: "That drink looks good." You are a dry drunk, addicted and have no interior healing of the heart. The thought of the drink wins out and you go for it. Disaster for the addict. Now, the same person, but in this case, they are into recovery with a mediation time on a daily basis. The heart is healing. It is gathering strength from meditation. How do you know? Well, the same thought comes up since thoughts cannot be controlled. "That drink looks good," says the mind. But the heart has the energy to overcome that thought. The drink is left alone, plus the person replaces the thought with, "I think I will do some kind act now." Thoughts won't kill you. A broken heart will.