An issue that is often raised by a number of successful and unsuccessful grads is the demanding nature of the work, particularly with reference to working hours. It is true that the job requires 100% commitment and late nights and weekend stints are not uncommon, but from my personal experience such efforts always pay off and I personally have no issue with putting in this level of commitment to reap the benefits it presents.
Another issue is that achieving fantastic financial gains is not immediate. Whilst the money does eventually come, the first few months can be difficult and whilst a retainer is in place and rent is contributed towards, not everyone is comfortable getting by on just this prior to eventually achieving a more sustainable income.