Rune Working for Mental Control

I would also add wunjo and kenaz and one more rune associated with the mind

Test it for one day and after or while it doing you should get sense of whether or not something is missing or must be added or rearranged also work with a set number that corresponds to a certain rune or emphasis you want for example uruz would be multiple of 2 or if you wanna emphasis on a certain number like 3 or 10 you keep to that it's your working you shall/should get a feeling into which direction it should go to just be open and keep reading and learning on the specific subject at hand

The affirmation is lacking "for me" at the end. It can be pozitive for some but that doesn't mean that it will be pozitive for you if you don't add at the end "for me" as well.

You're working toward controlling your mind, how would that actually kill your creativity?

What do you wish to control about your mind? Intrusive thoughts? Concentration power?

More control over the mind is developed with practices that balance the nervous system and equalize the activity of the brain hemispheres. E.G. vibrating Aum or Satanama for ten minutes straight consistently, doing asanas constistently and alternate nostril breathing.

The runes are associated with the Gods, who love you, and are energetically and intentionally allied with Humanity and its interests. You are also able to give runes instructions as well, meaning that you and this working are very safe. Intuition workings can also help in knowing/knowing quicker whether or not specific rune usages or combinations will have an undesired effect or not, too.

Maybe Mannaz, Wunjo and Ansuz would be a good to put in there, personally. Wunjo makes workings that require or manifest things that require effort (such as mental control) easier and less painful as well, even fun.

I've also found that a good workaround for problems is praying and asking the Gods to collaborate by putting their own guard rails and safety nets and to even contribute and collaborate in the working and how it manifests. You may even find yourself suddenly receiving a message from the Gods about it during mediation or a flow state if you're connected enough, like a message telling you not to worry and/or that you're divinely covered.

That and you can also place some Algiz on your creativity, pray to an artistic god to safeguard and help with it, and practice creativity workings alongside these if you have the time, even if it's as small as a prayer or a bit of focused intention and energy.

I hope all goes well, friend.