Looking for some advice

Hello, I don't want this to sound like l'm out here feeling sorry for myself but l've been stuck for a while and I thought I'd come here for some advice. I have come to the UK to turn mine and my family's life around so that we can be more comfortable back home. I have been in London by myself for almost 3 years now and I still work on low income jobs. Stuff takes time, l'm aware of that; but I just want some ideas or anything that could help me get started. All my enthusiasm is gone, l'm not used to this cold weather and l'm currently focusing on fighting myself as l've gained a bunch of weight while being here. I understand I have to better myself and gather more skills, just genuinely struggle to start off with ideas. Literally nothing comes to my head and l've fallen for scams about 3 times now where l've applied a lot of effort and time into learning a skill from someone or a company that just wants to keep sucking money out of me. I'd like to know if anyone has gone through this and if they have any advice for me to carry on. I'm still quite young (21) and giving up is definitely not an option for me. I just need some inspiration/opportunity and I will work 24/7 towards my final goal. Thank you for your attention, god bless.