This year starting phase initiated the boost for bitcoin prices and then the rally continued for long time and the proof for this is exchange witness huge user demanding bitcoin and then Tesla announced investing 42000 bitcoins worth $1.5 billion approximately and the next phase was coinbase listing and some more factors like corona virus pandemic also hit hard and force people to invest in some kind of good financial asset with high returns and btc seems feasible to them.It was around $68k-$69k range which marked its ATH this year but the analysis for year end was somehow not accurate and we witnessed huge dips and they went to below $29k once and then jumped back to $52k around but then again as you said second dip was there which carried it to $42k again.

But they all are normal in course of bitcoin journey if we have a closer look at its 13 years journey then we don't find it hard to control our sentiments.Suppose there is holder from 2017 crash which was somewhat major crash in bitcoin when they went to $3k from $19800 ATH of 2017 as they fell about 85% of the value but those who have hold it over all these years till now are still at profit so even if they panic sell they already gain profits out of it.But for me I am into long term investment as said before also and will not get hurt with any of the dips because in the end it will rise and profits will be delivered along with the interest of all these years and then this regret feeling will be gone also.

You have presented the nice spreadsheet for all the DCA investment for $100 week and see how you could easily Manage to accumulate more bitcoins each time and at the last we will have more then you always mention

You must have 0.02BTC with you

The DCA investment has helped me a lot and will continue the same for long till i have funds with me to support my habit to survive the future.