I just joined the forum. I read your post about aimlessness. Consider that everyone alive has to 'be' somewhere 'doing' something. And we all face many choices about being and doing. You may elect to 'be' in your room 'wondering' about what to do with your time. The solution to this feeling is not to discover a hidden secret of your existence but to engage yourself in activity.
Get off the bed and leave the room. Mow the lawn. Take a walk. Seek out a strawberry milkshake. The big questions of existence will never be solved to most people's satisfaction. But the little questions of what to do right now can be. Stop ruminating and go do something.
wrc