That's just the beginning in terms of taking responsibility for bad investments.
Once you come to the conclusion that the choices you make have a direct effect on your finances, you'll be in a much better position for building long-term wealth. If only external forces were to have control over our lives, no one would be able to consistently build wealth or the life they want. Give yourself a chance by recognizing the effect your choices have on your success and failure. The correlation might not always be perfectly clear, but accepting responsibility for outcomes that don't go your way is the first step towards ridding yourself of toxic financial attitudes that prevent you from achieving your potential level of wealth (and separately, life satisfaction).