Depends on the type of lawyer. Law degrees are fairly straightforward if you have common sense and can be disciplined to get work in on time. The further stages of training are where it becomes difficult. LPC or BVC to be a solicitor or barrister are more complex. Also, you will need a decent degree from a decent university to stand a chance of a training contract or pupillage and a solid academic background before that (eg. two As and a B at least).