node-promises-sucks.js

var skills = data.skills,
      activities = data.activities,
      works = data.works,
      schools = data.schools;

  delete data.schools;
  delete data.works;
  delete data.activities;
  delete data.skills;

  function PartStoring(RESUME, PartObj, parts, name) {
    var promises = [];
    parts.forEach(function(part) {
      delete part._id;
      var promise = PartObj.create(part, function(err, result) {
        if (err) {
          throw err;
        }
        RESUME[name].push(result);
      });
      promises.push(promise);
    });
    return Q.all(promises);
  }

  Resume
  .create(data, function(err, resume) {
    RESUME = resume;
    if (err) {
      res.send(400, err);
    }
  })
  .then(function() {
    return PartStoring(RESUME, Skill, skills, 'skills');
  })
  .then(function() {
    return PartStoring(RESUME, Activity, activities, 'activities');
  })
  .then(function() {
    return PartStoring(RESUME, Work, works, 'works');
  })
  .then(function() {
    return PartStoring(RESUME, School, schools, 'schools');
  }).then(function() {
    return RESUME.save();
  }).then(function() {
    RESUME.populate('skills schools activities works', function(err, result) {
      res.send(200, result);
    });
  });
};

 var promises = [];
    parts.forEach(function(part) {
      delete part._id;
      var promise = PartObj.create(part, function(err, result) {
        if (err) {
          throw err;
        }
        RESUME[name].push(result);
      });
      promises.push(promise);
    });
    return Q.all(promises);

can be changed to

var promises = parts.map(function(part) {
   delete part._id;
   var promise = PartObj.create(part, function(err, result) {
      if (err) {
        throw err;
      }
      RESUME[name].push(result);
    });
  });
return Q.all(promises);