No problem. Unlike other forms of meditation,  Transcendental Meditation practice involves no concentration, no control of the mind, no contemplation, no monitoring of thoughts.  Anyone can do it, even children with ADHD and soldiers with PTSD.

Once you begin practising TM, the benefits to your life will be so great that you make time to meditate regularly, as naturally as you brush your teeth.

TM is the absence of effort, you sit in whatever position makes you comfortable. For most people, this is sitting on the sofa normally as you would chatting with friends or watching TV.