Forget loading the bike up and driving to the trail centre ( I presume you are going to your nearest centre ) Find a route that you can go from home , make it into a simple blast , no faffing about , just go. I find riding alone in early morning before or to work sets me up for the day , riding alone isn’t strange , it helps you clear the head of all the crap. You might find that if you drive to work then drive to the trail then drive back its just too much hassle. Recently I spent a great 4 hrs one Sunday, bike was in the van ready to head down to Mabie but then I decided to head out to see what I could find , found parts of my local area I never knew about. I know the feeling you mention , might be something underlying , or even feeling guilty about going riding instead of dealing with whatever the issue is . Seriously , get out in the morning ,crisp clear frosty ones are best , go for a blast on your own then you have the mindset and the time to sort out any issues if there are any . Hope this helps.