I&#x27;m approaching 40.  I&#x27;ve never been &quot;aimless&quot;, and while I can definitely increase how often I take responsibility, I&#x27;m doing well.  I own a house, am married, taking care of my mother, employed, socking money away in a 401k (probably not fast enough, but it&#x27;s happening).<p>...and I&#x27;ve never felt like an adult.  I can have the weird dichotomy of having friends young enough to have missed everything I relate to my childhood, friends that I consider &quot;adult&quot;, and yet I still feel like I did when I graduated college.<p>I have talked with CEOs and VPs or just other coders that are younger than I, yet I &quot;feel&quot; like they are older, more experienced.<p>I have no idea when I&#x27;m really an adult, but I don&#x27;t expect it will be soon.