When u have an aerial view (rather overview ) u'll find not a single regret but a bunch of regrets pass ur life as u grow from chilhood to a matured person.
1. In childhood, when ur ist sibling born, u were apprehensive to share ur parents' love with the small one. Now u laugh & regret for the silly thought. 2. In school,u always wanted to excel in studies, in sports, in extracurricular activities. But u remained a mediocre . As this affected ur career, u regretted for this all thru ur life. 3. After u obtained ur professional qualification, u joined a company, worked f a few months & hopped to another as u were fussy & didn't like the job; after such vacilation for a few years (4/5), u wanted to settle in life ( by marrying) and u carried on ur the then job and found after sometime that ur classmates are in ur bosses' position; the years u lost in ur career , could not be compensated throout ur life; u regret.
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That in the past i allowed my parents to have greater say in my personal life which hurt my family life hard . However i didn't take it as a regret but took it as a challenge and overcame with flying colours.