Anti depressants would be a suitable answer
Step 1: Identify the decision, Step 2: Gather relevant information, Step 3: Identify the alternatives, Step 4: Weigh the evidence, Step 5: Choose among alternatives, step 6: Take action, Step 7: Review your decision & its consequences me I personally think that step 1: because if you don't identify your problem you won't be able to know what options you have.
The answer is
M= log (Xy/zpower3)
There really isn’t an answer for your question. Sorry.