Sometimes you may be up for some intimacy and sometimes you will blame fatigue and headaches for not feeling up for a romp in the sheets. Your libido will not always be steady, and that is OK and expected; unless you have a medical condition that could be affecting your sex drive, and that is nothing that a sex therapist can’t sort out. Libido is defined as that feeling of drive or motivation to engage in sexual behaviour. It is influenced by a number of factors. They could be biological, like low sex hormones, medical conditions and age. They could be social factors like a bad partner relations or lifestyle and psychological factors like stress, anxiety and self-esteem.