i have worked out on and off for a long time (mostly off, but that's neither here nor there

), but i have been sticking with it solid since the beginning of march. the first 3 months were easy for me to stay motivated. i was excited, even! i stalked tumblr and instagram for fitness motivation every day, and could barely sleep because i would be so excited to hit the gym. the past month has been complete torture. though i make myself do my work outs, i don't go into them with the same enthusiasm i did. i took a week off after 3 months and it was great, but it's been really hard to get back into it. i heard taking time off is important so you don't overtrain, but i am regretting that decision now.
the only thing that's really different now versus then is i am doing less cardio (which i love) and much more strength training now that i've shed a lot of the belly fat (not all, but a lot!). i like cardio because it is like therapy. i feel cleansed and refreshed afterwards, but i know strength training/circuit training/weight lifting is going to be more beneficial in the long run. right? i still do cardio, but not every day like i used to. and not for 40-60 minutes either lol.
so, how do you guys stay motivated?
and sorry, i'm sure this has been asked a million times, but hey i know more of you can probably relate to what im going through! help!!

thanks!