A lot of hope. Your brain is still incredibly capable of uptaking new skills at a high rate in your mid 20s.<p>Your brain starts to slow down around 25-30 years of age or so, based on the major studies I&#x27;ve read. Eg:<p><a href="http:&#x2F;&#x2F;time.com&#x2F;63500&#x2F;brain-aging-at-24&#x2F;" rel="nofollow">http:&#x2F;&#x2F;time.com&#x2F;63500&#x2F;brain-aging-at-24&#x2F;</a><p>Per that, the drop between 25 and 40, is only around 15%.<p>Becoming better at learning, and wiser in how you spend your time, can offset some of the cognitive decline that comes with age versus the raw capability of youth that is perhaps more squandered due to lack of wisdom.