my suggestion is contact mental health agencies in your area. they will know of any official studies being done in your area that need volunteer test subjects.

you can also contact colleges psychology department to see if there are any graduate students doing research studies in this area that may need test subjects.

keep in mind that most research studies on mental and physical health issues is time consumming and will require you to do more than just daydream.

for example they may want to to see a medical doctor, a psychiatrist, a psychologist. they may want you to go through some assessments / tests to verify what your mental and physical health issues are, they may also need you to sign release of information forms so that they can have access to your medical and mental health records to verify / quantify their findings vs what you have officially been diagnosed with and what medications you are on, and so on.

also keep in mind that many research studies do not pay their test subjects and some times do not pay the medical bills incurred during the research studies because they dont want law suits (people claiming the research results are tainted by paying subjects to be one way or another. )