We're very good at having positive experiences, both informally in our hedonistic culture and more formally through practices. Resting our mind upon a positive experience such as feeling loving or kind is the third step of taking the good. Link simply means that while experiencing a positive experience in the foreground of awareness, also being aware of something negative. So it gives you an acronym that's easy to remember, HEAL, H-E-A-L, have and reach absorb link.