Immersing yourself in the right environment is crucial. Exercising with friends, or around people who have achieved the kind of results you want is important to keep you accountable and focused. If you are using a personal trainer they need to do the same for you.
Do they have these qualities:-A personality that works with yours.
If you don't get on with your coach, you will only grow to resent them. I'm not saying you need to be best friends, but at least be on the same wavelength.
If the programs your trainer prescribes you has less than 80% compound exercises, find a new trainer. A compound exercise is one which uses more than 1 joint. A bicep curl (elbow joint) is not a compound exercise, but a pull down or pullup (elbow, shoulder joints) is.
Multi-joint movements are neccessary to ensure the most bang for your exercise buck, and to prepare you for whatever life throws your way.
-Keeps records
Do you have any idea about how much improvement (if any) you've made with your trainer? If they aren't documenting your progress in some form or another, they are just lazy. At the least it's always motivating to achieve a new PB. But if you can see that progress has plateaued through accurate recording, your programming can be adjusted immediately.
Kick 2009 off well by getting the right people on your team. Your coach/PT is one of the most important ones, so keep the above qualities in mind.