The skills you need guide to interpersonal skills

Commitment and Consistency
If you can get people to make a commitment, especially in public but even just to 
you, they are much less likely to go back on it later.
We like to be seen as consistent, and we also like to think that when we make 
a commitment, it matters: think ‘My word is my bond’. These ideas may be old-
fashioned, but they are powerful and effective.
Social Proof
The idea behind social proof is ‘strength in numbers’. It is partly a reflection of 
‘herd mentality’, but it is also about laziness: if someone else has done all the 
research and concluded that product A is best, then why do all the research again? 
This concept is behind the idea of testimonials on websites and in brochures, and 
it also explains why we like to consult on social media before buying anything.

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2.
ADVANCED COMMUNICATION SKILLS
Liking
This has two aspects: liking someone and being like them. We are more 
likely to be open to persuasion by someone we like. It is therefore worth 
investing time in building relationships, which is, of course, consistent with 
Tim Baker’s Collaborator strategy.
Showing that you are similar to someone—for example, that you have tastes 
and values in common—helps to build rapport and relationships much 
faster, so is an element of this.