Best meditation techniques (mindfulness,vipassana,yoga,zazen,TM,etc) to beat behavioral addictions (food,sex,porn,gambling,internet,videogames,etc)?

For a layman who wants to overcome behavioral addictions (i.e. any "*addiction that involves a compulsion to engage in a rewarding non-drug-related behavior – sometimes called a natural reward*", such as food, sex, pornography, gambling, internet, video games, etc.): - Which meditation techniques are the most recommendable? - Additionally, given the fact that an average layman cannot afford going full-time monk, what would be a recommendable frequency (in terms of minutes/hours per day) to see palpable results in a reasonable time? Furthermore: - Is a single meditation technique enough to overcome behavioral addictions? Or would it better to practice multiple meditation techniques at the same time? Or maybe different meditation techniques for different situations? For instance, are there any special meditation techniques to handle strong, compulsive urges in the presence of addiction cues/triggers? Finally: - Is meditation as a whole enough, or would one need to complement it with other non-meditative practices or measures? For example, positive affirmations, hypnosis, or maybe going to a therapist, exercising, sleeping 8+ hours, etc. I'm just throwing some ideas around.