On monday, it seems like you hand-picked the tasks and people you're dealing with. There shouldn't be any kvetching over incompatibility. Your mental powers peak midweek, so jump in with your opinion at any time that feels right. What you have to say is always worth hearing. Help a supervisor or client get organized late in the week. Your natural talent assists them tremendously and scores you dozens of points. You might be called on at the last minute. Your flexibility will be seen in the best possible light.