How do you guys avoid endless prayer lists?

I figure some of you have encountered this before, any suggestions?

I only have 1 prayer LIST that is addressed by all my devices. I can add/answer/delete individual ITEMS on the 1 LIST.

I can only tell you how I do it.

Aspirationally (meaning it doesn't always look like the way I want it too ) my prayer lists are divided into the times of the day when I tend to be thinking about certain things. For instance, current events is morning because that is when I tend to read news, etc. Prayers for church people tends to be in the middle of the day. Which works well because then I am often prompted to text or reach out to specific people. Family tends to be later afternoon. Later evening tends to be more personal.

The only topical list I have these days is prayers about things I am studying and I am asking for wisdom and insight.

I do like the summary list that the mobile app provides so I use that quite a bit. 

I've gone through several iterations of prayer list organization and I've settled on this because it provides the least amount of inertia to the thing I want to do.. which is to pray. I worry less about praying for everything knowing that the reminder will always be there for the next time I focus on praying.