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This is a good point adultcrypto since we don't need to have faith from the start and we could even be somewhat bearish, and in some sense, if we try to figure out our position size in accordance with our level of doubt or our level of bullishness, we can adjust our position size to become greater in the future if we become more bullish in the future.
This is very correct. Human mind works in away that whatever you set your focus on, you unendingly expect it to happen at that extent or more but nothing less. The level of faith/expectation placed in bitcoin is the driving force to how dedicated and disciplined and investor would be while engaging in his bitcoin investment. Being bearish would allow you lower your expectations and when it turns bullish, the joy would be stronger. But being too bullish in your expectations may expose you to investing beyond your capacity which would also make you unable to hold for long.