Everyone who is just blindly saying you need to fire people is just reacting with a herd mentality with no basis for a logical opinion considering you didn't provide a complete story.What you described was landscaping.

Most mentally exhausting undertaking of my life.

.- Simplify my career responsibilities and spend more time being mentally present with the family.

Diet and exercise have a great effect on the body both physically and mentally.  

If they typically won't do that, then I'd just mentally lump it into that rental rate.

Keep in mind  most Tenants are mentally unstable they are prone to over react and often make stuff up to fit their narrative . they are like young mischievous children with creative imaginations .

I think it goes with that mentality of Kiyosaki "how can I afford it?".

We aren't just starting early and building up the mentality, but we are also in the right path.

Fear from that point forward is just mental and getting comfortable.I think what helps is putting "Fear" into perspective. 

Finding others who are ahead of you and learn all you can, all the while setting yourself up financially and mentally to begin investing yourself once an opportunity arises.