Fear and greed are probably the worst emotions to have in connection with the purchase and sale of stocks.
My first job at Graham-Newman was to prepare the annual report for that 10th year.
If you are honest, hardworking, reasonably intelligent and have good common sense, you can do well in the investment field as long as you are not too greedy and don't get too emotional when things go against you.
I helped Ben with the third edition of Security Analysis, published in 1951.
Use book value as a starting point to try and establish the value of the enterprise.
Try not to let your emotions affect your judgement.