There are many expressions commonly used in English to express similarity.
There is no magic rule to help you remember them. You just have to learn them. Sorry!
Take a look at the examples below.
(There’s) no time like the present.
This is used when you want to say that something should be done sooner rather than later. It should be done now or as soon as possible.
E.g. “When do you want me to start work on the presentation?”
“Well, there’s no time like the present. Why don’t you start on it now?”
Too much like hard work.
We use this when we want to say that the task or activity is so difficult, tiring or strenuous that we no longer want to do it.
E.g. I like the idea of regularly cooking a 3 course meal but it’s just too much like hard work with all the preparation and cleaning up afterwards. We regularly go to restaurants instead.
Have fun learning English!
Louise