CHICAGO — With tighter budgets, smaller staffs and ever-changing technology, working in a public library is not for the faint hearted, so it’s important to keep both heart and mind healthy. Make a commitment this January, when you join PLA and instructor Pat Wagner, partner and trainer, Pattern Research Inc., Denver, Colo., at 1 p.m. CST, Jan. 23, for a live, one-hour webinar, “The Thinking Person’s Guide to Stress Management.”