Things that you are unlikely to regret: exercise, eating healthily, challenging yourself, making a plan, being kind.
Things that are good for us in the long run often feel difficult to do in the moment, primarily because we don’t see the results immediately and feel demotivated. It’s also quite strange that we expect ourselves to be good at something the first time we try it. It’s completely normal for your body and mind not to react the way you want when you expose it to something new which is vastly different from your norm e.g. balancing on one leg during a workout when your body is normally on two feet or sitting down, don’t be so surprised your body is shaking! Showing patience and kindness to yourself is key, it's ok to make mistakes and not get it right the first time.
In the past, there are a few things that have helped me to implement habits that I want to become a daily routine. I love making lists and ticking things off so I add the new habit to a daily list so I can check it off every day. It then gets to the point, maybe after a few months, where it feels so normal to do it and it’s ‘programmed’ in my routine I don’t have to write it down anymore. Another way I do something I don’t enjoy (in the moment but benefits me long term) is to do something enjoyable while doing the task. For example I used to be REALLY unfit and struggled with my body image too, and so exercise was difficult for me. I then started listening to personal development podcasts while working out to firstly block out the negative voices and secondly learning and developing my mindset, which also then helped with inner dialogue! Another example, eating healthy was such a challenge, but trying new recipes and understanding flavors improved my cooking and made it enjoyable to prepare and eat.
Everyone is different so find what works for you, you might need to see your vision board daily to do your daily habits, or reward yourself in some way e.g. have a quick chat with a friend after doing 2 hours of productive work. Do what you need to do to get the things you need to do, done! You won’t regret it!