Look at what you are doing right now to earn a living? Are you happy with what you are doing right now?
Do you think you would be happy after a few weeks or taking orders from your boss when in fact you are you own boss and make your own rules.
I work full time still because I started working at a huge IT company before I created my first blog. I'm a team lead meaning I'm the boss on the floor and I love being the boss and I love blogging still. I do both because I love it.
If I begin to hate my full time job and want to leave it, I know I'd have to raise my online income a lot more to be able to make more money then I do at my current job. I have full benefits at the full time job. When you work for yourself, you have no benefits so you have to buy them. In USA getting insurance is expensive if you don't get it through an employeer.
Bottom line is you make the decision and your family shouldn't tell you what you should do. It's not like you are hurting for money. You said your blog income is starting to rise up. What if you work harder right now on your blog, do you think you can make a lot more money? If I was you, I'd stick with blogging because you know what you are doing blogging.
Starting a new job, you on thin ice and management will watch you closely to see if you are a fast learner and make zero mistakes. Take it from me, I watch my new techs for 1 week and if they are not picking things up fast, I get rid of them because this is a IT company and we expect the people we hire are well qualified for the job.