I had to get to know myself, and be brutally honest with myself.
Self-awareness is the key - know and love yourself...
Sounds like you need some successes (victory) breeds confidence...
Many good suggestions here by others - my 2c is just this....
You need to give yourself some victories to "build" the confidence...
For example, knowing myself... calling it a diet for me never worked...
Diets have a beginning and an end - if you know what I mean.
I had to change somethings and make small victories....
When I started - All I did was give up soda pop, no more sugar laden drinks.
Could have a diet soda, but never really liked them that much. Save diet A&W root beer that is.....
After several weeks, maybe even a month.... I was surprised - I didn't crave or even want pop anymore, tried a sip and it tasted awful....
VICTORY

I told myself, if I can change that - what else can I change? ok, no more eating after 7pm at least 3 hours before bed.... If I don't eat by 7 I am going to bed hungry.... ( I was a late night pizza junkie ) .... About 3 weeks later this change wasn't a problem..
VICTORY

BONUS - I will never "go on a diet" again!!! Victory - I am losing weight
Without a diet... Small victories -
I just looked to make some changes, nothing overwhelming change one thing at a time - prove to yourself you can do it - and celebrate each Victory!!
Don't settle for less -
You can be victorious !!!
Change one thing!
Prove it to yourself and celebrate!!
My 2c.
The Orange One



