Having a difficult time and could use some perspective

I’m hoping this is the right place. I will try to keep it short.For the past 8 years I have been selling online. I started with drop-shipping, did a bit of wholesale and reselling, and now my focus has been handmade items, while still reselling what I can and doing print-on-demand. I also do rideshare when I can as it helps and gives me freedom.My issue is that I have trouble getting past a threshold with the amount that I’m making.On average, I make between $3-4k a month. I’ve had better months, and worse ones too, regardless it ebbs and flows.I am single, don’t have kids, my rent isn’t that high, I don’t have much debt, I try not to spend my money on dumb things, but basically it is like I’m living paycheck to paycheck.It makes me nervous. Somehow, I pay my bills and seem to get by, but I almost always feel like I can be doing better. I see others around me killing it, I know it’s possible, but don’t understand where I’m falling short and why there is this apparent threshold.Have you ever felt this way? What did you do/change?My handmade items are my passion, and I’ve had some great success with it, but in order to even consider going full-time with it, I need more bread and butter items that keep sales coming in, so that is something I’m going to work on.I guess the biggest thing for me, is just feeling lousy and like a failure because I’m not where zi feel I should be, and sometimes that is so paralyzing and I feel so much pressure that it is hard to do much if anything at all.So I guess much of this post is about mindset, fears and persisting when you are trying to make it on your own. I have worked many jobs, I’ve done the 9-5, and I just feel like this is the path for me but I need to do BETTER.Thanks for listening and I would appreciate any input you may have. see hubwealthy.com/wealthy