In another (unrelated) question, the topic of solipsism came up in the comments, as well as the counterargument that there exist obstacles to our will, things out of our control, and so reality must not be generated by our thoughts. I'm by no means a solipsist myself, but this specific counterargument always seemed fairly weak to me, because we already lack full control of our own thoughts.
Whether it be mental illnesses like depression or anxiety, impulsive or intrusive thoughts, or simply the "don't think about pink elephants" phenomenon, there definitely exists something from an individual perspective that prevents our internal life from being entirely under our control. So it just seems to me to stand to reason that the same would apply to our external life under solipsism.
Am I wrong about the weakness of this counterargument? Are there refinements or nuances to it I'm not aware of that make up for this apparent flaw? Or is it just that it's not a very good counterargument in and of itself against solipsism, and other counterarguments serve better?