Showing up is the most important part. Motivation comes after action. Build the habit and the results will become inevitable.

Push, Pull, Legs focusing on maximizing muscle growth in every muscle group beginning with big compound movements and progressing to isolations.

Notes*
Any running warmup can be swapped with most cardio exercises. Some examples are: jumping jacks, jump squats, biking, elliptical, row machine, etc.

Challenge yourself with weight that has you reaching failure between 5-10 reps

Accessory movements should be ordered by which muscle group you want to grow the most. For example, if you wanted to grow your hamstrings more than your quads you would start with hamstring curls before leg extensions.

Rest is just as important as the lifts. Be sure to rest for at least 2 minutes when going to or near failure, more rest on bigger compound movements like squats or deadlifts.