Don't let your imagination run wild - it will only cause you to think of the worst possible outcomes, while in reality we went through many rough times with BTC to know that it will always recover.
I recommend reading this short article - The Psychology of Trading Panic: http://traderfeed.blogspot.com/2016/11/the-psychology-of-trading-panic.html
I think we do not have to overthink . Just relax and think wisely. Be familiar with the rise and down of values. Its very important also to trust your self. Whatever decision you made, bear in mind that many consequencies would happen. Also, accept your mistakes and move on.