I work with a senior colleague who almost always seeks my approval on decisions that are his responsibility. I have advised and supported him a few times in the past, but now he seems to have become dependent on me to confirm or validate his actions. I get the sense that he doubts himself, worries that something might go wrong, and would like to direct the blame to me in case it did. I have my responsibilities, so I get annoyed that he depends on me to make his decisions for him. I’m also afraid that if I don’t respond to his requests, he’ll let his projects stagnate and then blame their failure on me. I feel he does not want to take ownership for his responsibilities, and it’s a nuisance. What can I do?