I just don't think this is accurate. Maybe he is not personally deciding your thoughts, but it seems clear you absolutely are letting him control your thoughts.
If, by virtue of the fact that he is in who he is (<-see how kind I was there) and will absolutely defend the ideas of the constitution, our law, morality, decency, etc. and that I am firmly opposed to him and his ways and will continue vote in whatever way that is the most harmful to MAGA as long as it has a stranglehold on one of our two parties, means that he "controls my thoughts" then I suppose you are right.
I simply see it as I have a Christ centered biblical worldview that insists that I love others, that I drive a stick in the spokes of the wheels of oppression, which means that I believe trying to actually follow the teachings of the Bible is what solidifies my opposition to him and his kind. Isaiah 58:6-11 sits printed on my desk as a daily reminder of who I am supposed to be. Trump, and MAGA, stand firmly opposed to everything in these verses and even today are angry about the idea of a federal holiday to allow a group of people who were enslaved for hundreds of years to celebrate that end...
“Is not this the kind of fasting I have chosen:
to loose the chains of injustice
and untie the cords of the yoke,
to set the oppressed free
and break every yoke?
7 Is it not to share your food with the hungry
and to provide the poor wanderer with shelter—
when you see the naked, to clothe them,
and not to turn away from your own flesh and blood?
8 Then your light will break forth like the dawn,
and your healing will quickly appear;
then your righteousness will go before you,
and the glory of the Lord will be your rear guard.
9 Then you will call, and the Lord will answer;
you will cry for help, and he will say: Here am I.
“
If you do away with the yoke of oppression,
with the pointing finger and malicious talk,
10 and if you spend yourselves in behalf of the hungry
and satisfy the needs of the oppressed,
then your light will rise in the darkness,
and your night will become like the noonday.
11 The Lord will guide you always;
he will satisfy your needs in a sun-scorched land
and will strengthen your frame.
You will be like a well-watered garden,
like a spring whose waters never fail.