Your experience isn't new, so you have to focus on the future and forget about the mistakes of your past experiences with Bitcoin
Forget about the past failure and loss is not enough as if you want to continue your investment, you must learn from your past failures and mistakes. If you can not analyze your past failures and find anything wrong, can not figure out ways of improvement, you should stop your investment journey and find something else beyond Bitcoin investment to do.
Forgetting mistakes and moving on is not the right way; the right way is remembering the mistakes and not repeating them in the future; that's how you can get better at what you are doing
Keep calm, don't try to instantly revenge the market. Spend some time off the market to refresh your mind, then do things as I wrote above.
Regrets are really nuts but can be a good teacher to shows how far Bitcoin has come and why learning and staying consistent now is important. Instead of focusing on whats lost, use that lesson as motivation to make smarter choices moving forward. Now is the perfect time to gauge oneself to reward yourself more.
Regret is a basic human instinct when we lost something, miss great opportunities in the past but life is irreversible and we only can learn from the past, live in the present, make plans for the future.
If our experience in the past can help us building up good strategy and plan in the present and for the future, what we spent and lost in the past actually worths. Bitcoin is here and Bitcoin market will continue its growth, so we will have a lot of time and chances to get profit with intelligent investment in Bitcoin.