Since you mentioned that you want to create something to share, then art of any kind, including music, is what I’d suggest too. Pour yourself into whatever art or music you are creating and it will turn out well. The key word there is “creating.” Art and music, when you are creating it, forces you into the present. There’s no room for you to wonder out into the past or the future, which don’t exist except in your head. Art forces you into the present and the present moment is the only place you will find peace, joy, creativity, and love.

Another Thunderbird user here on Linux. Thunderbird makes it easy to enable GPG email encryption. I think Enigma is what I use.