If you are doing a job and want to make a career in blogging, then blogging should be done part time. Because it is difficult to get money as soon as you start blogging.
If you are earning 25000 every month from your job, and think that 25000 will start coming as soon as you start blogging, then it is wrong to think so. Because it is almost impossible to get salary as soon as you start blogging.
The reason for this is that it can take 6 months or even a year or even 2 years to get money from blogging. It is very difficult to earn good money until your blog will not get good traffic.
That's why you should never leave your full time job while starting blogging. Blogging career should be started part time. And when 25000 starts coming every month from the blog and this income keeps coming for about 1 year, then only you should leave your full time job.
If you do not work anywhere and want to start a blogging career, then it may take at least 2 to 3 years or more to get a good income. Because it is not possible to earn 25000 within 6 months. Blogging career is such that it takes a lot of patience.
Therefore, you should leave your full time job only when consistent income starts coming from blogging.