Being that you were in a working environment for the last 20 years and did not see eye to eye with your former boss, you will definitely want to ask probing questions to see if you and your manager to be will be on the same page. An ounce of prevention is worth a pound of cure.
Consider your longer term career goals. Even if the culture or clients aren’t your ideal, are you building good, transferrable skills and experience? Most new consultants are building project management skills, finding and developing their specialty and related skills, and learning how to manage client relationships.
Changing career is a big decision and should not be taken in haste. Different people have different reasons for changing their career. Some want better paying jobs, some want good designations, others want career satisfaction and fulfillment, and so on.
Many people in their thirties will balk at a career change, as it might remind them too much of the frantic job shuffling and multitude of job changes that they went through. But the truth is, there is a chance that in midst of changing careers, you might have ended up in a job you don’t really like and really don’t intend to stay with.
Consider making a list of companies you’d like to work for and then call each company and ask to speak with the head of the department or area you are interested in, not to ask for a job, but to ask for advice. A job is part of who we are and should be a manifestation of the same. If the job don’t fit your personality, then it wont work long term.