Sometimes, the most obvious things elude us. Those things which benefit us may seem too simple, too immediate, too easy to be of any real help.
This is a mistaken point of view. For most of us, our lives aren't going to get better because of a single massive shift. True, this sometimes happens- someone's deep misfortune turns around, and things are suddenly much better. That's not the norm, so we best prepare ourselves.
So. Breathe. Just take a deep breath, hold it, then slowly breathe out.
After enough deep, soothing breaths, you'll notice a few things- your body relaxes just a little. Everything seems to slow down, just a little. You gain a little more control of yourself and your situation. It's not a huge amount of control- but it's more than you had when you started breathing slowly.
Life is like this in the broader sense, as is the spiritual path for most of us. The breakthrough moments of someone attaining theosis or enlightenment usually are breakthroughs because the person was practicing so much before. What seems sudden and out of nowhere was really determined by numerous preparatory steps and practices over a long period of time.
Breathing deeply and focusing on your breath won't solve all your problems, but it will allow you to calm down just a little.
Your life won't miraculously be changed by breathing deeply for a few minutes- but you'll be happier and have less suffering, and that's the goal.