During his weekly therapy sessions, colin finds it very difficult to talk about childhood memories. he often pauses before mentioning embarrassing moments, or simply forgets important details. colin's behavior illustrates:

Hey there,

 Resistance

Hope this helps :D

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The best I can think of is hes self conshes he was probily picked on and or teased because of these things when he pauses he is rembering and thinking if he trust the person hes talking to not to do the same thing.  

good luck and i hope that helps