I also have been working on a new mantra: Don't fight it.
In the past, I spoke about energy. I explored the idea that we only have a finite amount of force that we can dedicate to the world. Sometimes we unnecessarily spend energy on things we cannot control. I found that I was spending a lot of time and energy on trying to change a world that was built with me in mind. And believe it or not, life is pretty self-sufficient. You don't have to plan out every minute of every day because life will figure it out without any help from you.
But life can also be pretty cooperative. When you come up with a reasonable plan, it will allow you to take the reigns and make it happen. So, in essence, we just have to figure out where we want to use our energy, because life will take care of the rest.
This may be a bit of a weird stretch, but think of it like your respiratory system. Your lungs will continue to take in and exhale air regardless of whether you tell it to. But, you can also make a conscious effort to take a big calming breath.
Do not fight what you cannot control. But take control of what you can and use it to your advantage.
I'm sure this is the slogan of some 'take back your world' seminar that I am too cheap and too cynical to pay for, but I'm owning it and living it anyways.
There are so many times when I fight things that have not even happened yet or that will happen regardless of what I do.
Once you understand that sometimes there are things that you simply cannot change--and that this is okay, in fact, it is normal--you can go about changing those things that you can. Just accept that, for some reason or another, this world was made for you.