You bet, just go for keywords on something you enjoy talking or reading about yourself, and start writing. That's the most important part, because if you enjoy the topic(s), then you'll write more, gain more authority, gain more traffic, and earn more money.
People are making thousands daily,and what do you call that,hard work,ofcourse and maybe some extra intelligence and luck,but really,if you want to sell something,make the readers feel that you own and really used the product,thats what people want to hear,a real person,not some gimmicky commercial or something,i think thats how people have success.
Work smart not hard, btw $250 daily is totally possible, of course it depends on a lot of factors eg: what is the niche, where does the traffic of your blog comes from, how much time you work on your blogs etc.
With some clever SEO and some quality content I'm sure $250 a day would be easy it's just takes a long time to work up to that amount because your blog needs to be trusted by Google before you will start to rank for anything.
It's not very easy to get $250 daily initially but once you succeed then you will be increasing it to $ 1000/day very easily