GPA is problematic, but fixable. Take psych classes. Buttloads of them. Every .1 you pull it up helps a ton.
Do you want to practice or do academics? I assume practice since you mentioned the PsyD but figured I'd ask to make sure.
Nail the GREs. 1300+ preferably 1400+ will help a lot if you are looking at PhD programs. No idea for PsyDs. Mine were considered pretty poor at 1250 and got me eliminated from alot of places (again though - PhD).
GO START RESEARCH RIGHT NOW. Find a lab at your school to work in that interests you and is something you'd consider focusing on in graduate school. Work your butt off, make them love you. Once you've been there enough to get into the swing of things, see if you can get involved in putting together a poster for a conference, getting on a pub is even better. Be warned they aren't likely to let you do that on day 1, but if you bust your butt in the fall, there's a chance in the spring you can get involved.
Master's is a good idea for you. Might want to look into those. Many let you transition to doctoral work from their master's programs.
Realize you may not be successful applying next year. No harm in trying but realistically you may need more time to fix this then you'll have if you apply in the fall. Many of us take time off, so this is not a bad thing...most schools see it as a plus! Gives you more time to get experience.
All is not lost by any means, but realize its not going to be easy getting in🙂 Some places will love that you have a solid bio background, so that helps. If you do the above you'll have no troubles getting into a decent-to-good master's program as those are much less competitive (though still not easy). If you're successful there chances are you'll be able to get into a doctoral program.
As someone else mentioned, if you want to practice you can also go for an MSW or something along those lines. MUCH MUCH less competitive to get in, though its usually a completely different training model. If your goal is to "help people with emotionally difficult times" though, it CERTAINLY allows you to achieve that, just in a slightly different capacity.
Almost hate to bring this up since it usually turns into a flame-war, but if you have tons of money to throw around, there are some PsyD programs with really low acceptance standards. You might even have a shot as is, but if you do the above you'll have no problems getting into one of those. Downside is 150k (ish) of debt, vs. near-zero debt (or much less at the very least) elsewhere. I'm not a strong believer in this gameplan, though others here may disagree (do a search, you'll find a few thousand posts of people screaming at eachother). Personally, my recommendation is to take an extra year or two off improving your psychology CV and go to a more competitive one than do the above. I'm trying to be objective though, so I wanted to make sure you were aware its an option.
