One thing i get told alot from clients i train is that they want to be bigger, stronger, lose weight and generaly be fitter. You dont have to have a personal trainer to know what your goal is but once you have chosen the reason why you are training are you measuring if you are progressing in your new goal? Most people probably dont and might give up because they are not reaching their desired goals and this is because there is no measurment of any sort to see progress. So my advice would be whatever the reason your training and goal you have track what your doing. As an example if your goal is to get fitter and run a mile in 7 mins, your first workout you might jog a mile in 15 min. Write that down. Your second workout might be done in 14.59. This is progress and its being measured. This is a great tool for you to look at and positively see your getting closer to your goal. You should do the same with lifting weights to. Recording reps and sets and weight. Try it and in a month look back to when you starting tracking you will be pleasantly suprised with your progress and this will encourage you to keep going! Good luck.