Sales relies a lot on genetics. Charisma, looks, voice, height, etc. A cute blond girl can outsell you. It's also a very emotionally demanding job. You need to be able to turn emotions on, off, and adjust them to other people.
If you possess a few qualities, you can be great in sales. IMO, there are usually good rewards for putting in more work as far as the industry as a whole goes. It's a highly transferable skill. Other salesmen for different products or services may see you as a colleague if they're agnostic about what they sell.
But if you have attributes that don't work with the job, then it will be a struggle to hit quotas every time. If you're an introvert or have a soft heart (it does take a little psychopathy to be good), then that works against you. Sure, you might be able to compensate in some ways, but if rewards are competition based, then you might win or lose due to genetics alone.
You can train yourself for a niche though. For example, those with baby cheeks are seen as more trustworthy but less intelligent. They are probably good for a sale that has some kind of trial period and it's meant for the average person. You'll earn rewards by selling to many customers for small amounts. But if you're in technical sales and need to sell something like a CT scan machine, then having baby cheeks matters less than a good memory (as customers will want to know as much about the product as possible and missing one question might delay the sale). This type of sales work might have a quota of selling 1 or 2 units a year, but each sale could be in the six-seven figures range.
If you decide to try sales, give it three to five months depending on the price of the good or service. If you don't break an office record by then, then maybe it's not for you. But during those months, you really have to give it your all.