I'd be more concerned about your ability to cope during training than the end job itself (though obviously that should be a consideration). Outpatient general pediatrics tends to be high volume with relatively low acuity (most of the day is spent on well visits, follow-up of a handful of chronic problems like asthma, maybe some depression/anxiety, ADHD, etc, and sick visits). You do have to be able to cope with uncertainty in any medical field. The demands on documentation and volume of patients is increasing, and many employers are looking to cut costs with less trained individuals (PA, NP, etc).
There are other fields within pediatrics that may be lower acuity/volume--things like genetics, peds psych (which can be accessed through psych or peds, I believe), development and behavioral peds, etc will give you more time with your patients, but are often in a Children's Hospital setting where you may have other stressors added (needing to participate in hospital committees, teaching, etc).
I'm peds endo, and I love my job. It's taken me a while to adjust from the training mentality of 'I need to do everything', and I tend to enjoy my days more, but getting through training is tough, especially if you also have some executive functioning issues (this is not extrapolating to you, just describing where people I've seen struggle).
