HN user
I use 3 lists: first for the "big picture" long term goals, the second is for weekly goals, and third are daily todo lists. For all my planning I use paper and colored pens/pencils.
Yes I'm seeing a lot of people criticizing Telegram on Twitter and in media. But after doing some research I couldn't find any proof of their claims that Telegram have a broken crypto.
You can use secret chats, those messages are not stored on the company server.
I am really interested why Signal. Why not Telegram? I prefer Telegram over Signal because of much more better UI and rich functionalities i.e. bots. Signal app seems clunky and buggy. That's my 2 cents.