Dear Priya,
There is no ideal answer for "Tell me about yourself" question. It is impossible to imagine what is the psychology of the interviewer and what are his/her preferences.
To seek clarification, you ask the interviewer from where to start, whether from childhood or from your first job.
However, as written in the previous post, you may give a brief summary of your career. After completing your education, as you stepped into the professional world, start from that. Thereafter, tell in brief the nature of each job and what something new learnt in each job. Overall, you should project the positive side of your candidature. The career break if any may be mentioned. However, also mention what self-learning did you do during the break.
All the best!
Dinesh Divekar