When I first joined etsy over 3yrs ago I was totally enamored with the sellers who spent most of their time designing for their etsy stores, especially those that QTDJs already, and I have to admit it was kinda intimidating too. After I brushed off the "what-if worries", setup solid daily/weekly/monthly goals and started meeting them little by little, it became way easier and a lot less overwhelming.
My best advice is to keep your plan simple, your steps small, your time managed and your head held high - if you do it little by little you will always be accomplishing something, and won't get too discouraged AND you will get where you want to go in no time - then you'll look back in amazement over how much you accomplished.
Good luck with your newly acquired time :-)