Your social life (??????) could suffer today because you aren't eager to spend your valuable time engaged in lighthearted banter (gossip and conspiracy issues) or playful games (umm...) that distract you from your real purpose (which is finishing this novel). It's not that you don't know how to have a good time; it's just that you would rather enjoy yourself when the pressure of unfulfilled obligations wasn't (<--is that the right tense?) weighing on your shoulders. There's no need for long explanations; just let others know that you'll be ready for fun soon enough.
"I'll be ready for fun soon enough." By 2010 for SURE.