Intensify it. Open to it and let it be big in your mind. - Rick Hanson

To do Linking, a person must be able to hold two things in awareness, keep the positive material more prominent, and not get hijacked by the negative. Practicing mindfulness will increase your capacity to do these things. If you get pulled into the negative, drop it and focus only on the positive. Later on, you can allow the negative to come back alongside the positive in awareness. Most experiences of Linking are fairly brief, under half a minute, but you can take longer if you like.

Use imagery, which stimulates the right hemisphere of your brain. For example, if I’m with someone who’s getting intense, I might imagine myself as a deeply rooted tree, with the other person’s attitudes and emotions blowing through my leaves and shaking them — but winds always come to an end, and my tree remains standing. Or I’ll imagine that there is a picket fence between us — or, if need be, a glass wall that’s a foot thick. In addition to the benefits that come from the particular images themselves, activating the right hemisphere encourages a sense of the whole that is larger than any part — including that part of your experience which might feel uncomfortable with closeness. Be Mindful of Your Inner World

We develop mental resources in two stages. First, we need to experience what we want to grow, such as feeling grateful, loved, or confident. Second — critically important — we must convert that passing experience into a lasting change in the nervous system.