Constant promotion of your site can get in the way of the enjoyment of your site?

blogs,social network all sites with the aim of driving traffic to their sites.
traffic would just arrive without the need for promotion,but for most,promotion is essential. My site isn't overly busy,but it ticks along,i am sure with more effort i could drive a lot more traffic towards it,at the same time,i wouldn't want to spend all my free time doing that rather than actually spending time and posting on my own site.