What about someone that does not have a discretionary income yet the person knows how to manage his or her investment without all of that mentioned yet invest on it very well and become stable in the investment stronger and better than those that are financially stable buoyant . when it comes to source of income been consistent in ur investment can help you reach and figure out ur goal and sustainable desires in life ur important needs and achievement.
Discretionary income is what you use in accumulating Bitcoin you can know how to manage your investment but once you any other income outside your discretionary income to accumulate Bitcoin you are already gambling with your investment because then you might be using money meant for other family needs, children school fees or other necessary needs to accumulate Bitcoin and when the needs of those important occur you might be push to sell little Bitcoin you have accumulated to sort out those pressed need, this this why we should invest with those leftover income so you won't be thinking of sell your Bitcoin soon.