The Gentle Reminder can help you keep track how often you do each of the following, and a lot more:

take your vitamins/supplements take your medications apply lotions/drops check your sugar levels drink a glass of water a day get up to stretch from your computer on food storage containers for leftovers in the refrigerator	give medications to children & family members give medications to pets give treats or feed the animals feed the fish which days the pool chemicals were checked when plants are watered special skin/hair treatments

Just push the tab outward and down until it clicks into place.
There should be some resistance just before it "snaps" into place.
At the end of the week, or day, just reset it by snapping it back up and starting the process over.

The Gentle Reminders come in 3 Packs with the adhesive included.