Welcome to allnurses!
I can't think of anything to recommend that you do in advance.
Hard (impossible) to predict whether or not you'll have trouble getting a job fresh out of school -- many variables. If you're willing to relocate wherever you need to in order to get a psych position, then,
yes. Otherwise, it will just depend on how facilities in your area feel about hiring new grads into specialty areas, which is often a matter of how hard up they are for staff. In general, in areas that have an ample supply of experienced RNs in various specialties (mostly urban areas), employers are less likely to be willing to hire new grads into specialty areas.
Whether or not it's a good
idea for new grads to go directly into psych is controversial. Here is a older (but ongoing) thread about that question that you may want to review (if you haven't, already):
http://allnurses.com/forums/f46/why-...ng-250677.html
Best wishes!
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