You'll get there.
Pick a song that's three or four chords and straight forward, and play it. Sing too.
I've been playing about seven or eight years now. I don't remember exactly and it doesn't matter anyhow because the point is some days are good days and some days are not so good days. I don't think that ever goes away.
My guess is you've got other stuff on your mind. Hard not to have in the 40's. Kids. Pay for school. Pay your taxes. Will I make rent this month? The car needs a muffler. Was I supposed to pick Donna up after practice or was she catching a ride with Janet? All that stuff. Try and find a time when you can relax your mind before you pick up your ax. It'll help.
And at nine months, your supposed to stink at it. It starts to all come together at about a year so long as you keep in mind the difference between playing and practicing. After two years, you get people asking you to bring your guitar to the campfire with you. You get someone ask you, "Oh! Do you play?" and instead of saying, "I try", you're gonna say, "Yeah. I do." That feels good. It gets better. You'll get better.
In the meantime, grab a cup of herbal tea or if you are so inclined a refreshing adult beverage, chill out and smile a moment. THEN pick up the guitar. You'll hear the difference.