<human>: Can you summarize the given text in a few sentences?

To sum things up I've always wanted to work in veterinary medicine,  after working really hard, taking a bunch of other vet programs and gaining experience in various sittings and types of work in the field I am now working my way up to become a specialized registered veterinary technician.

About 4 months ago I scored a pretty sweet job in a specialized vet practice, I'm still working on my career as a specialized tech rather than a small practice tech but any and all experience helps, especially specialized. The issue I have is that my co-workers keep telling me to choose another job and it's not too late to switch careers.

I get it, they keep reminding me about wage and hours and benefits and workload, I'm well aware techs are very overworked and underpaid but I've always wanted to work/do work with animals so I'm willing to take the cons with the pros. Since joining the field I haven't dreaded going to work once, sure some days suck but I'm still learning a lot.

I'm getting sick of the two main techs I work with constantly telling me it's a terrible field and the pay sucks and I'm going to hate it too and I'm going to burn out. They're favourite line is "you're really smart just become a nurse, you'll make way more an hour". It's true but I don't want to be a nurse. 

I've talked to them and my bosses and my other co-workers and all of them say I'm really smart and it's really obvious I want to be doing this and they're always impressed at how quick I learn so it's not like they're indirectly telling me I'm a shitty tech. 

How do I get them to let up, I do fight back and say it's what I want they always say "your making a mistake, look at us, 35 and 50-someting and still in a practice". They're honestly making me hate my job because I have to deal with them on a daily basis.
<bot>: Worked really hard to get a job I love, co-workers keep telling me I'm making a huge mistake choosing said job and should choose a different career path that makes more an hour.