More interested in the present than the past
Some impressions stay with us all our life. Mostly it's the negative ones that stick around, but also positive impressions have a way of staying with us. By 'stick around' I mean that they come back every time there is something that reminds us of them. We are in the present, and yet they drag us back to the past. Sometimes they drag us back to our childhood. So we are in our forties and yet some impressions make us feel like when we were five or ten. That time when we were bullied at school. That time at the tennis court. That time when we broke up with somebody. By letting [the impressions] go we show that we are more interested in the present than the past.