I don't know which mhenga talked about life beginning at forty but whoever that wise man was, he talked a lot of truth. You do not know what awaits you at 40 until you get there. It's similar to climbing a mountain andnot knowing what is on the other side until you reach the peak. From this vantage point, you can look back on your life choices and stare ahead at the abyss it is leading you to. Forties come with restlessness and a desire for more before youth finally dwindles.
Forties feels like a second teenagehood, here you will find yourself questioning beliefs and principles you have lived with your entire life. You are rebellious in your search for a new you and societal rules can take a back seat.