Yes, personally I also have the same condition. I keep very few assets due to many factors, and of course that makes me regret it. Most of us are probably too quickly satisfied with the price of bitcoin. Even though we are very sure that the price of bitcoin can become very high, sometimes an urgent need makes someone have to sell the bitcoin that they are holding for the long term, especially if at that time we feel that the price of bitcoin has become very high.
There is no need to regret it when you sell your BTC, there are certain situations in which you have to sell your coins because you need fiat to solve some problems in real life. You can always accumulate BTC again, as long you have a good source of income or good skills, so you're either going to buy or earn it. Needless to say that BTC is also a currency, so spending it should never be ruled out of our books.