A lot of people in your past thread mentioned fixing/improving your titles/tags/SEO. This *is* a tip for helping people stay in your shop longer, because the better your SEO/titles/tags are, the more likely it is that the shoppers being directed to your site are going to actually be looking for what your site is selling.
A lot of your tags don't have much to do with your products, or aren't particularly descriptive (i.e. are one word). For example: happiness, happy, drugs, brown, beach, wood, gold, love, meditation.
Don't discount the advice you've already gotten just because it wasn't phrased as something 'to help people stay longer.' Someone else mentioned making your descriptions more grammatically correct and nice to read, which is also a tip for making people stay. I personally often think someone with grammar/spelling errors is not as credible because if they aren't taking their time to create their listings, how do I know they're taking their time to create their items? So as soon as I see poorly written descriptions/etc, I leave.
I'm not trying to sound overly critical, but is you're serious about wanting to improve your shop, listen to the advice people give you and think about the different ways taking their suggestions would help.