Don't worry about being too anxious. We all have to do what's right for us, and only we know the answer in ourselves.
Although, I wish I could find my childhood ponies
I had Mountain Boys, Nightlight, a few mail orders, Perfume Palace, a herd of TAF's & Dance & Prance, a few bits from the Paradise Estate...
Sadly, I moved house when I was 15 and we noticed a few things that we were sure went into the moving van never arrived at our new place. Convinced a bunch of stuff was stolen but we didn't notice until we'd unpacked everything and found that things were missing.
I know I packed them onto that moving van. If by some miracle they found their way back to me, I'd never let them out of my sight! There's absolutely nothing wrong with hanging onto things that have sentimental value. Actually, that's what the majority of my possessions are made up of