It's not enough having an investment plan, knowing the right choice to make for every investment defines the investor better. Take for example jumping on every new coin we find on reputable exchange might not be enough guarantee that coin will do well in the future.
Well, in my point of view, investment choice is still part of the investment plan. Investment plan is not as simple as how much money we want to invest, it's also include how we enter the market, how do we diversify our portfolio, and also the choice of our investment assets. Investment plan is enough if the investment plan is complete and comprehensive