It's your second job in 9 months and you're ready to jump ship? That's a red flag to me, and it will be to other employers
. You have roughly 4.5 months at each job. That is not enough time to properly adjust and settle in to a nursing position as a new graduate. You're not feeling competent because you haven't given yourself time to become compentant. Don't expect that you're going to be excellent right away. It takes time to adjust, to learn. I'd say it should take about a year at your first acute care job before you are truly comfortable.
Nothing in your post indicates you are failing- you didn't mention disciplinary action, major mistakes, patient safety issues, etc. Instead, you said the job was stressful. But you know what? Every job is stressful. Home health is stressful. Nursing homes are stressful. If you're looking for a stress free job, nursing isn't the place to be looking. (there's a great thread titled Easy Job??? about the stresses of home health, if you are interested.)
I know you said not to say it, but I'm going to. You need to stick it out for a few more months and actually give yourself a shot of succeeding.
I know hospital nursing isn't for everyone. But unless you want to walk away from it feeling as though you failed and can never return, you should not leave right now. Most non-hospital jobs will require a year of experience anyway, and you might find it difficult to get into a position with only 9 months and 2 jobs under your belt. You want to try to avoid being labeled as a job hopper, because it will come back to bite you.
After three more months in the hospital, you might be amazed at how much progress you have made and you'll realize that you really can handle it. Then if you still want to leave, you can do so knowing that you are are capable of acute care nursing and can return in the future, rather than feeling like you 'dropped out' of the hospital and curing yourself off from all of those future opportunities.