Why do I feel like I am either ahead of time or chasing the clock with ADHD 

Many people with ADHD describe a striking pattern. On some days they are far ahead of time, leaving early and over-preparing. On others they are chasing the clock, rushing at the last minute or realising too late that time has slipped away. According to the NICE NG87 guideline and NHS ADHD resources, this is not a character issue. It reflects genuine differences in time perception, executive function and motivation, which fluctuate from moment to moment. 

Why ADHD creates the feeling of being ahead or behind time 

People with ADHD often experience temporal myopia, where near-term tasks feel far more urgent or real than future ones. Research reviewed in the Journal of Personalized Medicine explains that adults with ADHD frequently misjudge durations and struggle with prospective timing, describing time as either racing by or disappearing. A decade of evidence summarised in the Journal of Clinical Medicine also shows consistent difficulties with estimating and reproducing time intervals, which can translate into sudden last-minute rushing. 

Executive function swings 

Differences in working memory, planning and inhibition mean it is harder to pace tasks steadily. When anxiety or past lateness is front of mind, people may over-structure their time and arrive very early. When that anxiety fades, the brain relies more heavily on an impaired internal clock, leading to procrastination or delayed starting. These shifts create the familiar oscillation between being ahead and behind time. 

Hyperfocus, procrastination and emotional pressure 

Clinicians at the Mayo Clinic and Cleveland Clinic note that adults with ADHD often alternate between procrastination and periods of intense hyperfocus. Hyperfocus can make someone lose track of time entirely, while anxiety or perfectionism can drive them to prepare excessively early to avoid uncertainty or criticism. 

Key takeaway 

Feeling either far ahead of time or constantly behind the clock is a recognised ADHD pattern shaped by differences in time perception, executive function and emotional regulation. With structured routines, external time cues and evidence-based support, it becomes much easier to move towards steadier, more predictable time use. 

Harriet Winslow, BSc

Author

Harriet Winslow is a clinical psychologist with a Bachelor’s in Clinical Psychology and extensive experience in behaviour therapy and developmental disorders. She has worked with children and adolescents with ADHD, autism spectrum disorder (ASD), learning disabilities, and behavioural challenges, providing individual and group therapy using evidence-based approaches such as CBT and DBT. Dr. Winslow has developed and implemented personalised treatment plans, conducted formal and informal assessments, and delivered crisis intervention for clients in need of urgent mental health care. Her expertise spans assessment, treatment planning, and behavioural intervention for both neurodevelopmental and mental health conditions.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy.

Dr. Rebecca Fernandez, MBBS

Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy.