The OP is clearly dealing with the symptoms commonly associated with ADHD. Whether or not they would be formally diagnosed by a psychiatrist is actually irrelevant. People with ADHD have coping strategies for these symptoms. It is wise to share in and learn from those strategies. Note that GP did not recommend a pharmaceutical treatment. But, when we notice that somebody has the symptoms of ADHD, it's common to recommend they see a doctor to have it checked out.