I do manage easily because I am more curious about managing my projects and I am very very careful about the deadlines. I have made a to-do list for my daily routines.
Do you need a personal tracker or a shared tracker? I use GTD as a system, which can be tracked using any thing from a legal pad to Jira.
What problems are you trying to solve for?
I use a variation of GTD in Jira and Confluence to track projects and get automated status updates
The obvious question is "Why not a legal pad?" :-) but more seriously, having a notebook/lab book can be really helpful here. You can keep contemporaneous notes and refer back to what is going on easily. I'll often walk around and talk to engineers on the status of a project and then record in my notebook what is happening. Then on weekly basis review my notes and call out things for the next week to follow up on.