Is there a safe way to remember a childhood experience more clearly?

Try ordinary reminders rather than memory-recovery exercises. You could look at dated photos or notes, or ask someone who was there what they remember, while making clear you don’t want them to suggest details. Keep separate notes for what you recall on your own and what you learned from other people.

There may not be a way to recover a clear, reliable memory. If nothing comes back, that doesn’t prove the experience did or didn’t happen. I’d avoid hypnosis or repeated guided attempts to uncover details, since suggestion can make imagined details feel familiar.

I’d be cautious about trying to force it. Memory isn’t a recording, and repeatedly picturing an event can change how certain it feels without making the details more accurate. Meditation may help you feel calm, but it can’t verify a memory.

If this is upsetting or affecting you now, a licensed mental health professional can help you talk it through without assuming a particular explanation. You can focus on how the uncertainty feels, rather than treating recall as something you have to solve.