Last weekend I took a few bottles of caulking, my ladder, and started sealing up around the windows, doors, and trim.
Without that it's easy for water to get inside the house.
The two exposed sides of the house took about half a day (the other two sides are under large eaves). Not difficult work, just messy and slow to do a good job.
But it'll help protect the house come this winter and for years to come.
Not as fun as a remodel or new construction, but a project with a high ROI.
Your store has plenty of those kinds of projects too. Very little cost and a high value, but aren't as fun as redesigns or trying a new sales channel.
That doesn't mean you should avoid them though.
Make sure to take the time to read through your content, shoot better product photos, and tweak your headlines. And anything else you know you "should" do but have been delaying.
Start with one. Then do another. And another.
It'll add up.
One project that gets neglected is your New Customer Campaign. Some stores set that up with a single email when they founded their store and have forgotten about it since.
It doesn't have to be complicated but it should be taken care of as much as your homepage. It's the best point of contact to start converting a (low-profit) new customer into a (high-profit) repeat customer.
Repeat Customer Insights includes some advice around New Customer Campaigns including the timings that have been working for your store.
You don't need it perfect right away, just enough to prevent the rain from getting in.