WATCH men that you look up to.
Something that I do sometimes if I feel lame and weaksauce is I look up videos of actors who have a strong manly presence, Brad Pitt, George Clooney, Daniel Craig as James Bond, etc. Or I read interviews with people who have masculine world-views, for example self-made millionaires. Surround yourself in that mindset and way of living and start doing the things they do. Literally copy them! To start with you will feel phony, like you're pretending to be someone else, but eventually you will start to assimilate some of it and do it without thinking, and then it will become part of you.
I had to retrain myself to do everything. People used to tell me at school that I had a ridiculous fruity walk, because I was so unconfident. I used to stare at the floor and avoid eye contact. Even a teacher once told me I had "very defensive body language". Boys would bully me, and I couldn't talk to girls. Plus I was very emotional and prone to cry about things that bothered me. So I know where you are coming from, believe me. I was Captain Wuss for many years, until I got fed up of it.
So I made some changes. I had my long hair cut off (my gf at the time begged me not to, because she loved it, but I finally plucked up the courage to do my own thing, and whaddaya know, she got over it...) and went for a short, spiky hairstyle. I took kung fu classes because I had a love of Jackie Chan movies. I stopped wearing my ridiculous baggy geek clothes (videogame T-shirts and Matrix trenchcoats) and started wearing stuff that fit me and flattered me. And most of all, I started WATCHING men and trying to do things that they did.
-Watch how men walk. Chin up, chest up, arms back. Don't keep crossing your arms and looking down. Be OPEN.
- Practice speaking more slowly and deeply. If you get it right, you can feel your voice starting from deep in your chest. And speak more loudly.
- Try to be less emotional and care less about everything. Teach yourself to kind of go "oh well, who gives a f***".
- Pick out some men that you really want to be like and start doing some of the things that they do, right now.
- The most important thing? Don't just do all of this when you are around other people!!!!!! Do it ALL THE TIME, even when you're alone. Practice being manly just when you're brushing your teeth, making the tea, making the bed, putting out the rubbish, everything. You'll make it part of YOU very quickly.