
You are frequently preoccupied with random thoughts, and find it difficult to pay attention. You suffer a -1 penalty to all Investigation and Perception skill checks, and a -2 penalty to your Initiative.
FLAW. This is a flaw feat. At your DM's discretion, you may take this feat at level 1. If you do, you may also gain a feat, or increase two of ability scores by +1 (or one by +2).

+ old school idea to make game more interesting And motivate players roleplay more
- people might not like the fact it is changing the game a bit.
+ Simple and nice feat for roleplayers :)
Absolutely! I wish I knew about this when making my current Rogue. It's literally how she acts already!
Is this a punishment for DM's?
Why is it a punishment?
Punishment, for dumb players
Could it be possible to update this with a small change of "Your mind cannot be read nor can you receive telepathic messages"?
This is a cool idea but realistically no one would ever take this feat because no one wants to make there character worse
On the contrary - I've offered flaw feats in a number of campaigns and players have enjoyed the ability to have flaws impact more than just a flavour. Not everyone is minmaxing their character - some people are in it for the storytelling and want the storytelling to inform the mechanics of the game. Those people don't want their flavour to become meaningless just because initiative was rolled.
As an example - in Critical Role Season 2, Liam O'brien worked with Matt Mercer to have a flaw such that his wizard, Caleb Widogast, could be "stunned" in combat if he saw a humanoid on fire.
Flaws are a great way to entice players to think deeper about characters and offering a feat/ASI provides them with a veritable carrot (a buff) to go with the stick (a debuff).
Interesting concept, I like it