I've really come so far to studying about the market waves and underwood that there's no strategy or tool that can guarantee you unregretes. It is just all up to you to make up your mind that the state of the market is profit sd lost but a long term holding will always go give you those chances to a better place.
The possibilities of your unregretes is stabilizing your emotions and just patiently keep holding nomatter what the circumstances is until the market make good and excited phase of your expectations.
But the regret will always be either you buy or not buy, such as you make a purchase of Bitcoin from the beginning of this year and do it in a long term and planned for the long term, then Bitcoin jumped the price up to $ 200k, but you can only collect 1 BTC , even though you are able to collect several BTCs, it will sometimes make you regret because you feel that why not buying more before.
But it is far better and not buying once, when the price jumped and does not have BTC it will be much more sorry especially when you have planned to buy BTC but don't do it, I am quite sure you will be very sorry for life.
Well as long as you buy, "I could have bought more" is an acceptable level of regret honestly, nothing that big and could be done in a better way. I am not saying that we are going to see something changing, we could say that it is going to be fine and not a big regret to go on, you already bought and that means you already made some profit and as long as you have that situation with you I think it is going to be just fine.
What I think isn't acceptable is the fact that we are going to end up with not buying, in that case you are not making any profit at all, and you are missing your chance to make some profit.
Comparison is that in one of them you make some profit and on the other you make no profit at all, it is obvious the difference is huge. Of course I agree that if you keep constantly buying, then eventually you are going to make a greater return, it is not going to be easy, it is going to take a while but you could keep on buying more and eventually get a greater result.
People who keep purchasing bitcoin are making a killing, coinbase even has a set "charge X amount to my card every month" type of option, those people are getting rich like hell unless they are selling, that's the right way.