Interpersonal skills are crucial in consulting. As a consultant, you are entering someone else’s domain and offering advice on how to handle problems. In this way, you have to be sensitive to their plight, understanding of the situation, and constructively critical of the problem.
All of this comes down to good communication.
Exhibit confidence. Clients will want to see that you are confident in the assertions you make about the problem, and in the solutions you provide. If you don’t seem sure about what you’re saying, your clients will be unsure of your ability to handle the situation. When putting together your solutions, make sure you have considered every counter-problem. Remain confident even when your solutions are being interrogated.
Develop relationships. You are entering into a professional relationship of sorts, and you should treat it as such. To what kind of communication does your client respond? Is this better handled in boardrooms, on video calls, or out to lunch? Understand your client as a person and approach them as such.
Be clear. Avoid jargon, roundabout explanations, and excessive technicalities. Your clients will work in different fields so while some terminologies will be transferable, mostly you will need to be understood in clear, universal terms. Practice your solutions on friends and family who don’t have knowledge of the field, to make sure you’re being understood.