I certainly don't have all the answers, and I definitely don't deal with it well myself all of the time, but I have a few tips and tricks that help me, and I'd love to share some of them with you.
How to Deal 1.0: Music
There's just something about music that penetrates deep into my heart. Lyrics can speak truth to me so much better than the written or spoken word.
That being said, I'd love to share with you a few songs in particular that I turn to when I'm feeling lonely or frustrated or #superdowninthedumpsaboutmyself because I'm single:
Someday Soon by Fracesca Battistelli is one of my favorites. I was blown away the first time I heard it. It's always a good reminder that I'm not alone in this, and it gives me an opportunity to dream a bit without becoming discouraged.
Who You Are by JJ Heller is an incredible song (and video)--"I don't know what You're doing, but I know who You are." Amazing truth emanates from that simple line. Right now I have no idea what God is doing, but I KNOW that He is sovereign and good.
While I'm Waiting by John Waller is one that I've been listening to for a few years (sometimes on repeat). I'm waiting on you, Lord, though it is painful. But patiently, I will wait. As hard as it is to wait on the Lord, I will still love Him and serve Him, trusting that He is working.
I could go on and on with this music business. It speaks to me and soothes my soul.
So whether you're a musician, a writer, a singer, or a listener (like me), I encourage you to find and create a playlist of songs that you can turn to on those dark or discouraging days (or hours). Allow the truth of the lyrics to speak to and sooth your soul. You're not alone.