You are absolutely able to function with OCD. However, that level of functioning will most likely depend on your follow-through with your therapy and medication regimen.
Many patients enter therapy hoping that their therapists will cure them, but if you have OCD, whether or not you get better is really up to you. Your therapist will not cure you. Therapists can give you tools through therapy or prescribe you medications, but following their recommendations is totally up to you.
Following the recommendations of a treatment provider may be one of the most difficult decisions that you will ever make. Some people are opposed to taking medications, so they need to decide to truly commit to taking them if that is the route of treatment that they choose.
Or if you are going to do exposure therapy, your therapist is going to ask you to purposely do the very things that you are afraid of, and you have to decide whether you are going to follow through with those exposures.
Doing the exposures only 90 percent of the time, will, in the long run, help maintain your OCD because you will have convinced yourself that even though it is not totally correct, part of your OCD (10 percent) is right and therefore still needs to be feared. You need to decide to be 100 percent committed to working on challenging your OCD, or your chances of recovery will decrease.
Although it is a challenge, people do it successfully every day, and you have the ability to be successful.