You can add any frequency adverb such as 毎日(everyday)、よく(often)、andときどき (sometimes) to a sentence to descibe how often you do something.
EX:
私はときどき喫茶店に行きます。
I sometimes go to a coffee shop.
Two adverbs which describe how infrequent an activity or an event is: せんぜん (never; not at all) and あまり (not often; not very much). These adverbs anticipate the negative at the end of the sentence. If you use せんぜんorあまり, in other words, you need to conclude the sentence with ません.
