You normally reach for the sugary whatchamacallit when you in the middle of a busy day at work realize you haven't eaten anything in like 8 hours.  It's a habit, it's what you've done for years now.

How do you break those bad habits?

Find a replacement for that sugary sweet you know you shouldn't reach for.  Instead of the twizlers or chocolates, have a small tupperware of fruit you can eat instead.  Your still snacking on something sweet but it's "healthy sweet".

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You are stuck in the rut of leaving work and finding any excuse to just head home and skip the gym.  It's becoming a habit and it's making you lazy.  Set an alarm on your phone for 5 minutes before you leave work for the day.  Have it remind you to...GO TO THE GYM!  In addition to that, have a friend or spouce send you a reminder text that you must NOT blow off the gym today.  This will help to hold you accountable.

Wanting to be a better you?  Write down 3 great qualities you feel you posses.  Then write down 3 things that you want to do better at.  Compare both list and implement all 3 qualities to 1 of the things you need to work on.  You'd be suprised at how this exercise will help you become the best version of YOU, you can be :)