It depends what it is stressful for you. I think it is fair to say it is a demanding but very rewarding job!
In my experience, most common stressors for people approaching / intending to work in consulting are
- Working under pressure
- Constant travel
- Long hours
- Changing deliveries ( in time and content) - somehow linked to point 1
No secret, consulting job can be all of the above.
But, i'd like to comment on some myths
- Stressful situation can happen wihtin the projects but are not the norm. Depends also on the industry / project / where you are in your learnirng curve
- It is extremely satisfying job if you are one person which is TRULY enjoying the challenges
- You can find stressful situations also in other jobs, not only in consulting, so this should not be the (only) decision factor
Hope it helps,
Best
Roland Berger