Such a great journey man. These days the price is so volatile that you really need guts to hold for even 4 months in straight row! I mean I keep buying and selling as I get the chance. Like if I see if I am in slight profit then I would just go in the market and sell it out. Later on I will keep buying when the prices are down, from the same money that I sold earlier. This just gives me small drift ahead but not as much as I could end up in doubling my investment.
I think one lesson is good from your investment plan, we should keep buying at different rates no matter what and keep storing the coins. The more I am scared the more I loose I guess?
Because just look now, you acquired 0.028 bitcoins which are worth more than those all four months at the yesterdays all time high.

Each of us need to judge whether selling some portion of our BTC is any kind of good idea, especially if our goal is to acquire more BTC.. so in the early years of being in the process of BTC accumulation, there is a kind of need to just be buying BTC through the three main techniques of DCA, lump sum investing and buying on dips, and really you should just get selling completely out of your mind as a strategy to accumulate more BTC.
Once you reach a status in which you have a lot of BTC or you are greatly in profits, then there may be some prudence in considering including selling (small portions) of your stash in order to off-set volatility or various other goals that might not be directly aiming at accumulation but instead merely balancing your wealth in ways that are reasonable and prudent.
Each of us need to assess our own personal situations in order to figure out where these various lines might be in terms of how far we might be in accumulation stage or if we might also be overlying a kind of accumulation/maintenance stage, and surely I would not proclaim that it is prudent to keep too much of your wealth ONLY in BTC - especially once you reach a certain level of BTC accumulation and there might be some problems if you do not own other assets or currencies because of real world matters of expenses and just benefits of diversification of wealth - even if BTC might well be the best of the long term performers and prospects in terms of investing, it can serve folks quite well to have a decent amount of short term expenses covered whether having cash flow or trying to manage and maintain BTC holdings when they start to become way too much of your wealth balance... if that situation develops after 4-10 years of investing into BTC.
By the way, if you are mostly investing with spare cashflow like OP suggests, it could take several years (4-8 years or more) to even reach points in which there are considerable profits or justifications to start to engage in some selling of your BTC in order to manage your BTC holdings and your overall wealth and allocations.
I am very happy and enthusiastic in starting this business and will not leave it again, because this business is very useful for the future and having a business in the long term for a business that is also quite satisfying.because in the last few months I am very starting to be enthusiastic about getting into this field, to start my umpteenth business to gain a little experience about the business that will give me a little profit
You are pretty vague in your comment CDC AP.
One of the best ways to get into BTC is to start with some kind of reasonable level of DCA while you are studying the space... whether that is $10 per week, $100 per week, $1,000 per week, or some other level that you find to be reasonable for you and your situation. As you study the space you can decide whether to become more assertive and aggressive towards your investing into it.. so probably in the beginning you might error on the side of reasonably small before becoming more assertive/aggressive. Many of us are going to learn a lot more once we both formulate a kind of plan and begin to execute upon it and then we can expand our exposure or the various ways that we are involved in the BTC space.. and there are surely a lot of things that can be learned and it can take a very long time before becoming more and more comfortable.. we have a decent amount of people involved in bitcoin for many years and do not really understand bitcoin very well or even NOT having had create a plan that is very tailored and customized to their individual situation whether that is merely balancing personal finances or maybe involving business finances that they might also want to expose within the bitcoin space.