Inquiry regarding psychiatric consultation for insomnia and burnout symptoms

‌Running an advertising agency with 4 billion KRW in annual revenue and 4 employees
Concurrent role as CMO for a US consumer goods brand, working 1 day every Friday, 6 million KRW/month after tax
Agricultural corporation in Gyeonggi-do, 4-hour meeting and brand marketing transition every Wednesday, 2.5 million KRW/month after tax
Other lectures and individual consulting averaging 3 million KRW/month
Currently in a doctoral program
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I've summarized it here, but I have so much more to do.
I feel like my body is slowly breaking down.
There are days when just opening my eyes in the morning feels overwhelming.
I wonder if I should reduce my workload, but then my greed kicks in and I think about expanding even more.
At the same time, I feel anxious that if I truly hit burnout, I might lose everything.
My insomnia is also getting worse; would seeking counseling at a psychiatric clinic help?